AMS Sectional Meeting Full Program
Current as of Tuesday, April 12, 2005 15:10:10
2000 Spring Central Section Meeting
Notre Dame, IN, April 89, 2000
Meeting #953
Associate secretaries: Susan J Friedlander, AMS susan@math.northwestern.edu
Saturday April 8, 2000

Saturday April 8, 2000, 7:30 a.m.4:30 p.m.
Meeting Registration
First Floor Lobby, Center for Continuing Education, McKenna Hall 
Saturday April 8, 2000, 7:30 a.m.4:30 p.m.
Exhibit and Book Sale
First Floor Lobby, Center for Continuing Education, McKenna Hall 
Saturday April 8, 2000, 8:00 a.m.10:50 a.m.
Special Session on Differential Geometry and Its Applications, I
Room 155, DeBartolo Hall
Organizers:
Jianguo Cao, University of Notre Dame cao.7@nd.edu
Brian Smyth, University of Notre Dame smyth.1@nd.edu
Frederico Xavier, University of Notre Dame xavier.1@nd.edu

8:00 a.m.
Behavior of eigenfunctions near the ideal boundary of hyperbolic space.
Harold G Donnelly*, Purdue University
(9535869) 
8:30 a.m.
Generalized Harnacks for Ricci flow on manifolds with positive curvature operator.
Bennett Chow*, University of Minnesota
Dan Knopf, University of Wisconsin
(95358153) 
9:00 a.m.
Dimension of the space of polynomial growth harmonic functions.
Peter Li, University of California, Irvine
Jiaping Wang*, University of Minnesota
(95358244) 
9:30 a.m.
Local rigidity of certain classes of almost K\"ahler 4manifolds.
Vestislav Apostolov, IHES, France
John Armstrong, Oxford, UK
Tedi Draghici*, Northeastern Illinois University, USA
(95353111) 
10:00 a.m.
A differential geometric construction of the Thom class.
JiPing Sha*, Indiana University at Bloomington
(95353237) 
10:30 a.m.
Forms from pullbacks, currents from projections.
Bruce Solomon*, Indiana University
(95344230)

8:00 a.m.

Saturday April 8, 2000, 8:30 a.m.11:25 a.m.
Special Session on Microlocal Analysis and Partial Differential Equations, I
Room 138, DeBartolo Hall
Organizers:
Nicholas Hanges, CUNY, Lehman College nwhlc@cunyvm.cuny.edu
Alex Himonas, University of Notre Dame alex.a.himonas.1@nd.edu

8:30 a.m.
Complex line bundles and hypocomplex vector fields.
Howard Jacobowitz*, Rutgers University  Camden
Gerardo Mendoza, Temple University
(95335313) 
9:00 a.m.
An F. and M. Riesz theorem for planar vector fields.
Shiferaw Berhanu, Temple University
Jorge Hounie*, Universidade Federal de S\~ao Carlos
(9533538) 
9:30 a.m.
On the existence of elliptic pseudodifferential operators.
Howard Jacobowitz, Rutgers University
Gerardo A Mendoza*, Temple University
(95358261) 
10:00 a.m.
Hypoellipticity of nonsingular closed 1forms on compact manifolds.
Abdelhamid Meziani*, Florida International University
(95335133) 
10:30 a.m.
Uniqueness in the Cauchy problem for certain first order pdes.
Shif Berhanu*, Temple University
Jorge Hounie, Universidade federal de Sao Carlos
(95335119) 
11:00 a.m.
Analytic hypoellipticity of Sums of squares revisited.
Sagun Chanillo*, Rutgers University, New Brunswick, NJ
Francois Treves, Rutgers University, New Brunswick
(95335147)

8:30 a.m.

Saturday April 8, 2000, 8:30 a.m.11:20 a.m.
Special Session on Nonlinear Partial Differential Equations, I
Room 136, DeBartolo Hall
Organizers:
Qing Han, University of Notre Dame Qing.Han.7@nd.edu
Bei Hu, University of Notre Dame Bei.Hu.1@nd.edu
HongMing Yin, Washington State University

8:30 a.m.
Recent Progress on the Analysis of Microwave Heating.
HongMing Yin*, Washington State University
(9533574) 
9:00 a.m.
Lower Semicontinuity of $L^\infty$ Functionals.
E. N Barron*, Loyola University Chicago
R. R Jensen, Loyola University Chicago
C.Y. Wang, University of Kentucky
(95349107) 
9:30 a.m.
On Linear Boundary Values of Weakly Quasiregular Mappings.
Baisheng Yan*, Michigan State University
(9533567) 
10:00 a.m.
Single point and double point blow up for a problem arising in chemotaxis.
Howard A Levine*, Iowa State University
(9533565) 
10:30 a.m.
Mathematical theories for smectic A liquid crystal materials.
Chun Liu*, Penn State University
(95335126) 
11:00 a.m.
Steady States of `Thin Fluid Film' PDEs: Stability and Relative Energy Levels.
Richard S. Laugesen*, University of Illinois, UrbanaChampaign
Mary C. Pugh, University of Pennsylvania
(9533527)

8:30 a.m.

Saturday April 8, 2000, 8:30 a.m.11:20 a.m.
Special Session on Algebraic Coding Theory, I
Room 126, DeBartolo Hall
Organizers:
Judy Walker, University of Nebraska jwalker@math.unl.edu
Jay Wood, Purdue University, Calumet wood@calumet.purdue.edu

8:30 a.m.
Some properties of the relatives of projective ReedMuller codes.
Peng Ding*, Clemson University, SC
(95394174) 
9:00 a.m.
Minimum weight generators of generalized ReedMuller codes.
Jennifer D. Key*, Clemson University, SC
(95394113) 
9:30 a.m.
On $(q^2+q+2,q+2)$arcs in the projective plane $\mathrm{PG}(2,q)$.
Harold N. Ward*, University of Virginia
(9539487) 
10:00 a.m.
Dual Codes of Translation Planes.
Kelle L. Clark*, Clemson University, SC
(95394114) 
10:30 a.m.
Orthogonal Designs and SpaceTime Codes for Wireless Communication.
Robert Calderbank*, AT&T Labs
(95305241) 
11:00 a.m.
Algorithmic machinery for answering questions about existence and properties of hypothetical binary linear codes with specific parameters.
David B Jaffe*, Univ. of Nebraska  Lincoln
(95394236)

8:30 a.m.

Saturday April 8, 2000, 8:30 a.m.11:20 a.m.
Special Session on Differential Inequalities and Applications, I
Room 208, DeBartolo Hall
Organizers:
Paul W. Eloe, University of Dayton eloe@neelix.udayton.edu

8:30 a.m.
Existence of Solutions for $2n^{th}$ Order Nonlinear Generalized SturmLiouville Boundary Value Problems.
Jeffrey A. Ehme, Spelman College
Paul W. Eloe, University of Dayton
Johnny Henderson*, Auburn University
(9533440) 
9:00 a.m.
Three Symmetric Positive Solutions for Lidstone Problems By a Generalization of the LeggettWilliams Theorem.
Richard I Avery, Dakota State University
John M Davis*, Baylor University
Johnny Henderson, Auburn University
(95334141) 
9:30 a.m.
Boundary Value Problems for Weakly Coupled Equations.
William K.C. Yin*, LaGrange College
(95334234) 
10:00 a.m.
Nonlinear Volterra Perturbations.
Theodore A Burton*, Northwest Research Institute
(9533458) 
10:30 a.m.
Some integrability properties of solutions of nonlinear third order differential equations.
M. Bartu\v sek, Masaryk University
John R Graef*, University of Tennessee at Chattanooga
(95334246) 
11:00 a.m.
Recent developments on semipositone systems.
Maya Chhetri*, The University of North Carolina at Greensboro
(95335264)

8:30 a.m.

Saturday April 8, 2000, 8:30 a.m.11:20 a.m.
Special Session on Representations of Groups and Related Objects, I
Room 102, DeBartolo Hall
Organizers:
Chris Bendel, University of Wisconsin, Stout bendelc@uwstout.edu
George McNinch, University of Notre Dame mcninch.1@nd.edu

8:30 a.m.
Overgroups of irreducible alternating groups.
William J Husen*, Ohio State University
(95320252) 
9:00 a.m.
Restricted Lie Triple Systems and Algebraic Groups.
Terrell L Hodge*, Western Michigan University
(95320202) 
9:30 a.m.
On maximal subgroups of finite classical groups.
Kay Magaard*, Wayne State University
Gerhard Roehrle, Universitaet Bielefeld
Donna Testerman, Geneva/ Switzerland
(95320240) 
10:00 a.m.
Orthogonality of Cosets Relative to Irreducible Characters of Finite Groups.
Randall R Holmes*, Auburn University
(95320118) 
10:30 a.m.
Blocks for $A_n$ and selfdual $p$cores.
Ben Ford*, Sonoma State University
(95320214) 
11:00 a.m.
The multiplicityfree permutation representations of the Ree groups ${}^2G_2(q)$ and Suzuki groups ${}^2B_2(q)$.
Julianne G. Rainbolt, Saint Louis University
Jagat K. Sheth*, Saint Louis University
(9532023)

8:30 a.m.

Saturday April 8, 2000, 8:30 a.m.11:15 a.m.
Special Session on Algebraic Methods in Statistics, I
Room 216, DeBartolo Hall
Organizers:
Marlos Viana, University of Illinois, Chicago viana@uic.edu

8:30 a.m.
Evolution Equations on Lie Groups and Stochastic Processes.
Philip Feinsilver*, Southern Illinois University
Jerzy Kocik, Southern Illinois University
(9536085) 
9:30 a.m.
Deconvolution on compact Lie groups.
Peter T Kim*, University of Guelph
(9536253) 
10:30 a.m.
Some moment properties of the multivariate Dirichlet distributions.
Rameshwar Gupta, University of New Brunswick
Donald Richards*, University of Virginia
(9536281)

8:30 a.m.

Saturday April 8, 2000, 9:00 a.m.11:20 a.m.
Special Session on Commutative Algebra, I
Room 129, DeBartolo Hall
Organizers:
Juan Migliore, University of Notre Dame migliore.1@nd.edu
Chris Peterson, Colorado State University peterson@math.colostate.edu

9:00 a.m.
On Nagata's Conjecture.
Brian Harbourne*, University of Nebraska
(95314129) 
9:30 a.m.
Generalisation of a theorem of Kempf on vector bundles on Projective Spaces.
Mohan Kumar*, Washington University in St. Louis
(95314307) 
10:00 a.m.
On the variety of special linear systems of degree $g1$ on smooth algebraic curves.
A Ohbuchi, Tokushima University
C Keem*, Seoul National University
K Cho, Seoul, Korea
(95314232) 
10:30 a.m.
Reduced arithmetically Gorenstein subschemes with prescribed properties.
Uwe Nagel*, Universit\"atGH Paderborn
(95313267) 
11:00 a.m.
Liaison and CastelnuovoMumford regularity.
Marc Chardin, CNRS and Universite Paris 6
Bernd Ulrich*, Michigan State University
(95313257)

9:00 a.m.

Saturday April 8, 2000, 9:00 a.m.11:20 a.m.
Special Session on Optimization and Numerical Analysis, I
Room 215, DeBartolo Hall
Organizers:
Leonid Faybusovich, University of Notre Dame leonid.faybusovich.1@nd.edu

9:00 a.m.
New theories of setvalued differentials and new versions of the maximum principle of optimal control.
Hector J Sussmann*, Rutgers University
(95349158) 
9:30 a.m.
Discrete Schur flow and applications.
Yoshimasa Nakamura*, Osaka University
(9533534) 
10:00 a.m.
On totally nonnegative matrices.
Michael Gektman*, University of Notre Dame
(95315254) 
10:30 a.m.
Passive ReducedOrder Modeling via KrylovSubspace Methods.
Roland W Freund*, Bell Laboratories
(95365110) 
11:00 a.m.
Unitary Hessenberg Eigenproblems: Algorithms and Applications.
Gregory S Ammar*, Northern Illinois University
(95365296)

9:00 a.m.

Saturday April 8, 2000, 9:00 a.m.11:20 a.m.
Special Session on Integrable Systems and Nonlinear Waves, I
Room 141, DeBartolo Hall
Organizers:
Mark S. Alber, University of Notre Dame mark.s.alber.1@nd.edu
Gerard Misiolek, University of Notre Dame misiolek.1@nd.edu

9:00 a.m.
Poisson Structures, Asymptotic Stability and Integrable System.
Anthony Bloch*, University of Michigan
(95337268) 
9:30 a.m.
Continuous Symmetries of Difference Equations.
Pavel Winternitz*, CRM, Montreal, Canada
(95337269) 
10:00 a.m.
Radiation Loss of DispersionManaged Solitons.
William Kath*, Northwestern University
(95337271) 
10:30 a.m.
Weak Shock Reflection.
John Hunter*, UC Davis
(95337272) 
11:00 a.m.
The Zero Dispersion Limit of the mKdV Hierarchy for the Nonselfadjoint ZS Operator.
David Levermore*, University of Arizona, Tucson
(95337273)

9:00 a.m.

Saturday April 8, 2000, 9:00 a.m.11:20 a.m.
Special Session on Algebraic Geometry, I
Room 117, DeBartolo Hall
Organizers:
Karen Chandler, University of Notre Dame chandler.6@nd.edu
Scott Nollet, University of Notre Dame nollet.1@nd.edu

9:00 a.m.
An algebraic proof of a formula of Zak on the dimension of the Gauss image.
Aron Simis, Universidade Federal de Pernambuco
Karen E Smith*, University of Michigan
Bernd Ulrich, Michigan State University
(95314223) 
9:30 a.m.
Hodge integrals and Hurwitz numbers.
Tom Graber*, Harvard University
Ravi Vakil, MIT
(95314262) 
10:00 a.m.
Hodge integrals, Hurwitz numbers, and the GromovWitten potential of a point.
Ravi Vakil*, MIT
Ian P Goulden, University of Waterloo
David M Jackson, University of Waterloo
(95314253) 
10:30 a.m.
Moduli spaces of weighted pairs.
Brendan Hassett*, University of Chicago
(95314293) 
11:00 a.m.
Some remarks on the Hodge conjectures for abelian varieties.
Elham Izadi*, University of Georgia
(95314195)

9:00 a.m.

Saturday April 8, 2000, 9:00 a.m.11:20 a.m.
Special Session on Several Complex Variables, I
Room 209, DeBartolo Hall
Organizers:
Jeffrey Diller, University of Notre Dame diller.1@nd.edu
Nancy Stanton, Univeristy of Notre Dame stanton.1@nd.edu

9:00 a.m.
Solving the $d$ and $\overline\partial$equations in thin tubes and applications to mappings.
Franc Forstneric*, University of WisconsinMadison
Erik Low, University of Oslo
Nils Ovrelid, University of Oslo
(9533272) 
10:00 a.m.
Regularity of $\overline{\partial}$ on pseudoconcave compacts and applications.
Andrei Iordan*, Institut de Math\'ematiques de Jussieu
(95332345) 
10:30 a.m.
Isomorphism of two Lie algebras arising in CRgeometry.
Alexander V. Isaev*, Australian National University
Vladimir V. Ezhov, University of Adelaide
(95332136) 
11:00 a.m.
The Green function with a pole along a complex subspace.
Finnur Larusson*, University of Western Ontario
Ragnar Sigurdsson, University of Iceland
(95332140)

9:00 a.m.

Saturday April 8, 2000, 9:00 a.m.11:15 a.m.
Special Session on Homotopy Theory, I
Room 101, DeBartolo Hall
Organizers:
William G. Dwyer, University of Notre Dame dwyer.1@nd.edu
Michele Intermont, Kalamazoo College intermon@kzoo.edu

9:00 a.m.
A MinamiWebb formula for compact Lie groups.
John Martino*, Western Michigan University
Stewart Priddy, Northwestern University
(9535536) 
9:30 a.m.
On spin and modularity in conformal field theory.
Igor Kriz*, University of Michigan
(95355175) 
10:00 a.m.
Equivariant LubinTate formal group laws.
Kevin P Lee*, Purdue University Calumet
(95355320) 
10:30 a.m.
Periodic Spaces and Group Actions.
Alejandro Adem*, University of Wisconsin
Jeffrey H Smith, Purdue University
(9535548)

9:00 a.m.

Saturday April 8, 2000, 9:00 a.m.11:20 a.m.
Special Session on Applications of Invariant Manifold Theory, I
Room 140, DeBartolo Hall
Organizers:
Peter Bates, Brigham Young University peter@math.byu.edu
Clarence Eugene Wayne, Boston University cew@math.bu.edu

9:00 a.m.
The parameterization method for invariant manifolds.
Rafael de la Llave*, Univ. of Texas at Austin
Ernest Fontich, Univ. de Barcelona
Xavier Cabre, Univ. Polit. Catalunya
(95358101) 
9:30 a.m.
Detecting Invariant Manifolds in Time Series.
Lou Pecora*, Naval Research Laboratory
Tom Carroll, Naval Research Laboratory
(9533788) 
10:00 a.m.
Chaotic Synchronization and Invariant Manifolds.
Kresimir Josic*, Boston University
(9533789) 
10:30 a.m.
Using center manifold theory to find canard solutions.
Martin Krupa*, New Mexico State University, Las Cruces, NM
(9533493) 
11:00 a.m.
Invariant manifolds for singular perturbations with turning points.
Weishi Liu*, University of Kansas
(9533442)

9:00 a.m.

Saturday April 8, 2000, 9:00 a.m.11:25 a.m.
Special Session on Quasigroups and Loops and Their Applications, I
Room 131, DeBartolo Hall
Organizers:
Michael K. Kinyon, Indiana University South Bend mkinyon@iusb.edu
J. D. Phillips, Saint Mary's College of California phillips@stmarysca.edu

9:00 a.m.
Linear Moufang Loops.
Maria Lourdes Giuliani*, Universidade Federal de Santa Maria
Francisco Polcino Milies, Universidade de Sao Paulo
(9532011) 
9:30 a.m.
Homogeneous Congruence Loops.
Thomas Q Sibley*, St. John's University
(9532097) 
10:00 a.m.
Webs with rotation and reflecion properties and their relations with certain loops.
Bokhee Im*, Dept. of Math./Chonnam National University
Helmut Karzel, Zentrum Mathematik/Technische Universitaet Muenchen
(95320225) 
10:30 a.m.
$p$Ranks of Nets.
G E Moorhouse*, University of Wyoming
(95305300) 
11:00 a.m.
Algebraic aspects of the theory of 4webs $W (4, 2, r)$.
Vladislav V. Goldberg*, New Jersey Institute of Technology
(9532008)

9:00 a.m.

Saturday April 8, 2000, 9:00 a.m.11:20 a.m.
Special Session on Number Theory, Algorithms, and Cryptography, I
Room 118, DeBartolo Hall
Organizers:
Eric Bach, University of Wisconsin, Madison bach@cs.wisc.edu
Jonathan Sorenson, Butler University sorenson@butler.edu

9:00 a.m.
Jacobians of Hyperelliptic Curves with Prime Order.
Douglas Kuhlman*, University of Illinois at Urbana/Champaign
(95311322) 
9:30 a.m.
A note on Shanks's Chains of Primes.
Edlyn Teske, University of Waterloo
Hugh C Williams*, University of Manitoba
(95311142) 
10:30 a.m.
Online analysis of algorithms for computing quadratic irregularity.
Joshua R Holden*, Duke University
(9531119) 
11:00 a.m.
Clear Rosettes.
Casey K Storey*, C.F.C.T.E. Foundation
(9537059)

9:00 a.m.

Saturday April 8, 2000, 9:00 a.m.11:30 a.m.
Special Session on Cooperative Learning in Undergraduate Mathematics Education,I
Room 210, DeBartolo Hall
Organizers:
Nahid Erfan, University of Notre Dame erfan.1@nd.edu
Vic Perera, Kent State University pererav@trumbull.kent.edu

9:00 a.m.
Cooperative Learning in Undergraduate Mathematics: Generalities, Difficulties, An Approach and Results.
Ed Dubinsky*, Georgia State University
(9539716) 
10:00 a.m.
The "Nuts and Bolts" of One Approach to Cooperative Learning: THE ACE CYCLE.
Keith Schwingendorf*, Purdue University North Central
(9539718) 
11:00 a.m.
Discussion

9:00 a.m.

Saturday April 8, 2000, 9:00 a.m.10:45 a.m.
Special Session on Geometry and Analysis in Carnot Carath\'eodory Spaces, I
Room 217, DeBartolo Hall
Organizers:
Scott Pauls, Rice University pauls@math.rice.edu

9:00 a.m.
Regularity near the characteristic set in the nonlinear Dirichlet problem and conformal geometry of sublaplacians.
Nicola Garofalo, Purdue University
Dimiter N Vassilev*, Purdue University
(9533531) 
10:00 a.m.
Legendrian Energy Minimizers.
Luca Capogna*, University of Arkansas
FangHua Lin, Courant Institute
(95349201)

9:00 a.m.

Saturday April 8, 2000, 9:30 a.m.11:15 a.m.
Special Session on Singularities in Algebraic Geometry, I
Room 120, DeBartolo Hall
Organizers:
Sandor Kovacs, University of Chicago kovacs@math.uchicago.edu
Andras Nemethi, Ohio State University nemethi@math.ohiostate.edu

9:30 a.m.
Generalized Casson Invariants via Gauge Theory.
Hans U Boden*, The Ohio State UniversityMansfield
Christopher Herald, University of Nevada, Reno
(95357130) 
10:30 a.m.
Equivariant Casson and links of singularities.
Olivier Collin, Harvard University
Nikolai Saveliev*, Tulane University
(9533221)

9:30 a.m.

Saturday April 8, 2000, 9:30 a.m.11:15 a.m.
Special Session on Index Theory and Topology, I
Room 119, DeBartolo Hall
Organizers:
John Roe, Pennsylvania State University roe@math.psu.edu
Stephan Stolz, University of Notre Dame stolz.1@nd.edu
Bruce Williams, University of Notre Dame williams.4@nd.edu

9:30 a.m.
Cutting and pasting manifolds from the algebraic point of view.
Andrew Ranicki*, University of Edinburgh
(95355245) 
10:30 a.m.
Infinite isotropy in group actions.
Erik K Pedersen*, SUNY Binghampton
(95357342)

9:30 a.m.

Saturday April 8, 2000, 9:30 a.m.11:20 a.m.
Special Session on Symbolic Dynamics, I
Room 207, DeBartolo Hall
Organizers:
William Geller, Indiana UnivPurdue Univ Indianapolis wgeller@math.iupui.edu
Nicholas S. Ormes, University of Texas, Austin ormes@math.utexas.edu

9:30 a.m.
Strong Shift Equivalence and Diffeomorphisms.
Jack Wagoner*, UC Berkeley
(95381165) 
10:00 a.m.
Canonical symbolic dynamics for onedimensional generalized solenoids.
Inhyeop Yi*, UNiversity of Maryland, College Park
(95358344) 
10:30 a.m.
Some Ktheoretic invariants from shifts of finite type.
Danrun Huang*, St. Cloud State University, St. Cloud, MN
(95337194) 
11:00 a.m.
Hyperbolic dynamics and operator algebras.
Jerry Kaminker*, IUPUI
(95337308)

9:30 a.m.

Saturday April 8, 2000, 11:40 a.m.12:30 p.m.
Invited Address
Persistence of Invariant Manifolds and Invariant Foliations.
Auditorium, Center for Continuing Education, McKenna Hall
Peter W Bates*, Brigham Young University
(95358251) 
Saturday April 8, 2000, 2:00 p.m.2:50 p.m.
Invited Address
Continued fractions and integrable systems.
Auditorium, Center for Continuing Education, McKenna Hall
David Sattinger*, Utah State University
(9533704) 
Saturday April 8, 2000, 3:00 p.m.6:20 p.m.
Special Session on Commutative Algebra, II
Room 129, DeBartolo Hall
Organizers:
Juan Migliore, University of Notre Dame migliore.1@nd.edu
Chris Peterson, Colorado State University peterson@math.colostate.edu

3:30 p.m.
Mixed Ladder Determinantal Varieties.
Nicolae Gonciulea, University of Michigan
Claudia Miller*, University of Michigan
(95313326) 
4:00 p.m.
Equidimensional symmetric algebras and residual intersections.
Mark R Johnson*, University of Arkansas
(95313125) 
4:30 p.m.
The Vanishing Conjecture for maps of Tor and "strong" splitting in modulefinite extensions.
Nandini Ranganathan*, Univeristy of Michigan
(95313249) 
5:00 p.m.
Linkage of Modules.
Heath M Martin*, University of Central Florida
(95313220) 
5:30 p.m.
Primes Associated to Multigraded Modules.
Eric West*, University of Kansas
(95313266) 
6:00 p.m.
Closures of ideals.
Alberto Corso*, Michigan State University
(95313333)

3:30 p.m.

Saturday April 8, 2000, 3:00 p.m.5:20 p.m.
Special Session on Differential Geometry and Its Applications, II
Room 155, DeBartolo Hall
Organizers:
Jianguo Cao, University of Notre Dame cao.7@nd.edu
Brian Smyth, University of Notre Dame smyth.1@nd.edu
Frederico Xavier, University of Notre Dame xavier.1@nd.edu

3:00 p.m.
Cohomogeneity One Einstein Equations and Integrability.
Andrew Dancer, Oxford University
McKenzie Y Wang*, McMaster University
(95353196) 
3:30 p.m.
Vector Fields on Flows of Certain Closed 3Manifolds and Their Confoliations.
Richard H. Escobales, Jr.*, Canisius College
(9535315) 
4:00 p.m.
The role played by a special family of Finsler surfaces.
David Bao*, University of Houston
(95353184) 
4:30 p.m.
Projectively Related Einstein Metrics in RiemannFinsler Geometry.
Zhongmin Shen*, Indiana Univ.Purdue Univ. at Indianapolis
(95353216) 
5:00 p.m.
Local Moduli Space.
Gang Liu*, University of California Los Angeles
(95353352)

3:00 p.m.

Saturday April 8, 2000, 3:00 p.m.5:20 p.m.
Special Session on Optimization and Numerical Analysis, II
Room 215, DeBartolo Hall
Organizers:
Leonid Faybusovich, University of Notre Dame leonid.faybusovich.1@nd.edu

3:00 p.m.
A Primal InteriorPoint Method for Nonconvex Minimization.
Florian Jarre*, University of Notre Dame
(9539063) 
3:30 p.m.
A longstep primaldual pathfollowing algorithm for symmetric programming problem.
Leonid Faybusovich*, University of Notre Dame
Rebekah Arana, University of Notre Dame
(9539056) 
4:00 p.m.
Solution of Quadratic Assignment Problems Using Quadratic Programming Relaxations.
Kurt M Anstreicher*, Dept. of Management Sciences, University of Iowa
(95390209) 
4:30 p.m.
Approximation of DenseSubgraph and the Complement of MinBisection.
Yinyu Ye*, The University of Iowa
Jiawei Zhang, The University of Iowa
(95368229) 
5:00 p.m.
Optimal Magnetic Shield Design by PrimalDual InteriorPoint Algorithm.
Takashi Tsuchiya*, The Institute of Statistical Mathematics
(95349303)

3:00 p.m.

Saturday April 8, 2000, 3:00 p.m.5:55 p.m.
Special Session on Microlocal Analysis and Partial Differential Equations, II
Room 138, DeBartolo Hall
Organizers:
Nicholas Hanges, CUNY, Lehman College nwhlc@cunyvm.cuny.edu
Alex Himonas, University of Notre Dame alex.a.himonas.1@nd.edu

3:00 p.m.
A reflection principle for degenerate hypersurfaces.
Xiaojun Huang*, Rutgers University
(95332145) 
3:30 p.m.
Local solvability for operators with double characteristics and real principal part.
Stefano Benvenuti, University of Ferrara
Enrico Bernardi, University of Bologna
Antonio Bove*, University of Bologna
(95335200) 
4:00 p.m.
Solvability near the characteristic set for a class of planar vector fields of infinite type.
Adalberto P Bergamasco*, Universidade Federal de São Carlos/ Brazil
Abdelhamid Meziani, Florida International University
(95335161) 
4:30 p.m.
Conormal suspensions of differential complexes.
C. Denson Hill*, SUNY at Stony Brook
(95335324) 
5:00 p.m.
The tangential CauchyRiemann complex on Lipschitz boundaries.
MeiChi Shaw*, University of Notre Dame
(95335321) 
5:30 p.m.
Analytic singularities of the Bergman kernel for tubes.
Gabor Francsics, Columbia University
Nicholas Hanges*, Lehman College/CUNY
(95332127)

3:00 p.m.

Saturday April 8, 2000, 3:00 p.m.5:20 p.m.
Special Session on Integrable Systems and Nonlinear Waves, II
Room 141, DeBartolo Hall
Organizers:
Mark S. Alber, University of Notre Dame mark.s.alber.1@nd.edu
Gerard Misiolek, University of Notre Dame misiolek.1@nd.edu

3:00 p.m.
An EulerianLagrangian Approach to the NavierStokes Equations.
Peter Constantin*, University of Chicago
(95335274) 
3:30 p.m.
Solitary wave collisions in the Ion Acoustic Plasma Equations.
David Sattinger*, Utah State University
(95337275) 
4:00 p.m.
Nonlinear stability of densitystratified shear flows in 2D.
Harvey Segur*, University of Colorado, Boulder
Micheal Weinstein, Bell Labs
(95335276) 
4:30 p.m.
What happens after the CamassaHolm equation breaks down.
Henry McKean*, Courant Institute
(95337279) 
5:00 p.m.
The long wave limit for the water wave equations and the FPU model.
Eugene Wayne*, Boston University
(95335280)

3:00 p.m.

Saturday April 8, 2000, 3:00 p.m.5:50 p.m.
Special Session on Algebraic Geometry, II
Room 117, DeBartolo Hall
Organizers:
Karen Chandler, University of Notre Dame chandler.6@nd.edu
Scott Nollet, University of Notre Dame nollet.1@nd.edu

3:00 p.m.
On the connectedness of the Hilbert scheme of curves in ${\bf P}^3$.
Robin Hartshorne*, U. C. Berkeley
(95314179) 
3:30 p.m.
Degenerations of sums of line bundles.
Prabhakar Rao*, University of Missouri  St.Louis
Mohan N Kumar, Washington University
Chris Peterson, Colorado State University
(95314310) 
4:00 p.m.
Counting Rational Points on K3 Surfaces.
David K McKinnon*, Tufts University
(95314191) 
4:30 p.m.
Singularities of Rational Curves on K3 Surfaces.
Xi Chen*, U. C. Santa Barbara
(95314172) 
5:00 p.m.
The Bounds on Euler Numbers of Threefolds.
MeiChu Chang*, University of California at Riverside
(95314157) 
5:30 p.m.
Remarks on irregular varieties.
Christopher D Hacon*, Univ. of Utah
Jungkai A Chen, National Chung Cheng Univ., Taiwan
(9531443)

3:00 p.m.

Saturday April 8, 2000, 3:00 p.m.5:50 p.m.
Special Session on Several Complex Variables, II
Room 209, DeBartolo Hall
Organizers:
Jeffrey Diller, University of Notre Dame diller.1@nd.edu
Nancy Stanton, Univeristy of Notre Dame stanton.1@nd.edu

3:00 p.m.
Dynamics of Polynomial Diffeomorphisms of $C^2$.
Eric Bedford*, Indiana University
(95337176) 
4:00 p.m.
Holomorphic selfmaps of $\mathbb P^2$ with an invariant elliptic curve.
Marius V Dabija*, University of Michigan
(95337242) 
4:30 p.m.
Hyperbolic automorphisms and holomorphic motions in ${\bf C^2}$.
Gregery Buzzard, Cornell University
Kaushal Verma*, Syracuse University
(95332341) 
5:00 p.m.
Progress report on some injective mapping problems.
Dror Varolin*, University of Michigan
(95332263) 
5:30 p.m.
The dbar Neumann problem on Reinhardt domains.
Siqi Fu, University of Wyoming
Emil J Straube*, Texas A&M University
(95332277)

3:00 p.m.

Saturday April 8, 2000, 3:00 p.m.5:45 p.m.
Special Session on Homotopy Theory, II
Room 101, DeBartolo Hall
Organizers:
William G. Dwyer, University of Notre Dame dwyer.1@nd.edu
Michele Intermont, Kalamazoo College intermon@kzoo.edu

3:00 p.m.
Hopkins' proof of the Landweber Exact Functor Theorem.
Haynes R. Miller*, MIT
(95355346) 
4:00 p.m.
On the Homotopy Theory of Commutative Algebras and the Rigidity of the Cotangent Complex.
James M Turner*, Calvin College
(9535550) 
4:30 p.m.
Gamma homology, Topological AndreQuillen homology and Stabilization.
Maria Basterra*, UIUC
Randy McCarthy, UIUC
(95355247) 
5:00 p.m.
Small chain models for the little ncubes.
James E McClure*, Purdue University
Jeffrey H Smith, Purdue University
(95355205)

3:00 p.m.

Saturday April 8, 2000, 3:00 p.m.5:50 p.m.
Special Session on Nonlinear Partial Differential Equations, II
Room 136, DeBartolo Hall
Organizers:
Qing Han, University of Notre Dame Qing.Han.7@nd.edu
Bei Hu, University of Notre Dame Bei.Hu.1@nd.edu
HongMing Yin, Washington State University

3:00 p.m.
Multiple solutions of nonhomogeneous semilinear elliptic equation in the entire space.
YB Deng, Huazhong Normal University
Y Li*, University of Iowa
XJ Zhao, Savannah State University
(95335340) 
3:30 p.m.
Singular and Rarefactive Solutions to a Nonlinear Variational Wave Equation.
Ping Zhang, Academia Sinica
Yuxi Zheng*, Indiana University
(95335160) 
4:00 p.m.
Regularity of solutions of nonlinear oblique derivative problems in nonsmooth domains.
Gary M Lieberman*, Iowa State University
(9533566) 
4:30 p.m.
Eigenvalue problems related to the onset of superconductivity.
Peter J Sternberg*, Indiana University
(95335228) 
5:00 p.m.
A Class of Degenerate Equations.
Lihe Wang*, University of Iowa
(95335325) 
5:30 p.m.
Variational Formulations for VlasovPoissonFokkerPlanck Systems.
Chaocheng Huang*, Wright State University
Richard Jordan, Worcester Polytechnic Institute
(9533576)

3:00 p.m.

Saturday April 8, 2000, 3:00 p.m.6:20 p.m.
Special Session on Algebraic Coding Theory, II
Room 126, DeBartolo Hall
Organizers:
Judy Walker, University of Nebraska jwalker@math.unl.edu
Jay Wood, Purdue University, Calumet wood@calumet.purdue.edu

3:00 p.m.
Quaternary QuasiCyclic Codes and Some New Binary Codes.
Nuh Aydin*, The Ohio State University
Dijen K. RayChaudhuri, The Ohio State University
(9530544) 
3:30 p.m.
When the Binary Images of GF(4) Codes are DoublyEven.
Vera Pless*, UnUniv. of IllinoisChicago icago
(9539447) 
4:00 p.m.
Codes with a nonHamming metric.
Steven T Dougherty*, University of Scranton
(9539484) 
4:30 p.m.
MDS Codes over Finite Rings.
Hiroshi Horimoto, Kumamoto University
Keisuke Shiromoto*, Louisiana State University
(95305198) 
5:00 p.m.
Preordered Sets and Codes over Rings.
Marcus Greferath, Ohio University at Athens
Stefan E. Schmidt*, M.I.T.
(95305213) 
5:30 p.m.
A $\mathbb{Z}_8$linear Lift of the Golay Code and Derived Examples of Outperforming Nonlinear Binary Codes.
Iwan M Duursma, University of Limoges, France
Marcus Greferath*, Ohio University at Athens, OH
Simon Litsyn, University of Tel Aviv
Stefan E Schmidt, MIT, Cambridge, MA
(95305265) 
6:00 p.m.
Finite Frobenius Local Rings, Partial Difference Sets and TwoWeight Codes.
Xiangdong Hou*, Wright State University
(95305297)

3:00 p.m.

Saturday April 8, 2000, 3:00 p.m.5:45 p.m.
Special Session on Singularities in Algebraic Geometry, II
Room 120, DeBartolo Hall
Organizers:
Sandor Kovacs, University of Chicago kovacs@math.uchicago.edu
Andras Nemethi, Ohio State University nemethi@math.ohiostate.edu

3:00 p.m.
Boundedness for $3$fold singularities.
James M$^c$kernan*, Mathematics Department, UCSB
(95314117) 
4:00 p.m.
About Mapping Class Groups in higher dimensions and Geometric Monodromy of the Milnor fiber.
Nikolai A Krylov*, University of Illinois at Chicago
(95314137) 
5:00 p.m.
Elliptic Genera and applications to mirror symmetry.
Anatoly Libgober*, University of Illinois at Chicago
(95314221)

3:00 p.m.

Saturday April 8, 2000, 3:00 p.m.5:50 p.m.
Special Session on Applications of Invariant Manifold Theory, II
Room 140, DeBartolo Hall
Organizers:
Peter Bates, Brigham Young University peter@math.byu.edu
Clarence Eugene Wayne, Boston University cew@math.bu.edu

3:00 p.m.
1Dimensional Properties of Scalar Parabolic Equations.
Kening Lu*, Brigham Young University
(95335109) 
3:30 p.m.
Strong pulse interaction in coupled reactiondiffusion systems.
Tasso Kaper*, Boston University
(9533596) 
4:00 p.m.
Homoclinic orbits for singularly perturbed NLS.
Chongchun Zeng*, Courant Institute, NYU
(9533790) 
4:30 p.m.
A geometric singular perturbation theory for hyperbolic PDE with relaxation?
Govind Menon*, Div. of App. Math., Brown University
(9533514) 
5:00 p.m.
Dynamics of Patterns in the Optical Parametric Oscillator.
Keith S. Promislow*, Simon Fraser University
(95335104) 
5:30 p.m.
Asymptotic Behaviour of the Domain of Analyticity of Invariant Curves of the Standard Map.
Tere M. Seara*, Universitat Polit\`ecnica de Catalunya
Jordi Villanueva, Universitat Polit\`ecnica de Catalunya
(95358168)

3:00 p.m.

Saturday April 8, 2000, 3:00 p.m.5:50 p.m.
Special Session on Differential Inequalities and Applications, II
Room 208, DeBartolo Hall
Organizers:
Paul W. Eloe, University of Dayton eloe@neelix.udayton.edu

3:00 p.m.
Positive Solutions to Singular Nonlinear Boundary Value Problems.
Lynn H Erbe*, University of NebraskaLincoln
(95339116) 
3:30 p.m.
Lyapunov Inequalities for Time Scales.
Martin J Bohner*, University of Missouri  Rolla
Stephen Clark, University of Missouri  Rolla
Jerry Ridenhour, Utah State University
(95334144) 
4:00 p.m.
Riccati equations of a selfadjoint matrix differential equation on a measure chain.
Allan C Peterson*, University of NebraskaLincoln
(95339115) 
4:30 p.m.
Improvements to the LeggettWilliams Fixed Point Theorem.
Richard I Avery*, Dakota State University
(9533494) 
5:00 p.m.
Asymptotic properties of solutions of a 2nth order differential equation on a time scale.
Douglas R Anderson*, Concordia College
Allan Peterson, University of NebraskaLincoln
(9533464) 
5:30 p.m.
On the global stability of cycles in difference equations.
Saber N Elaydi*, Trinity University
(95339315)

3:00 p.m.

Saturday April 8, 2000, 3:00 p.m.6:25 p.m.
Special Session on Quasigroups and Loops and Their Applications, II
Room 131, DeBartolo Hall
Organizers:
Michael K. Kinyon, Indiana University South Bend mkinyon@iusb.edu
J. D. Phillips, Saint Mary's College of California phillips@stmarysca.edu

3:00 p.m.
From Bruck to Bol, Part I.
Michael K Kinyon*, Indiana University South Bend
(95320231) 
3:30 p.m.
From Bruck to Bol, Part II.
Jon D. Phillips*, Saint Mary's College of California
(95320149) 
4:00 p.m.
From Bruck to Bol, Part III.
Tuval S Foguel*, Department of Mathematics, NDSU
(95317151) 
4:30 p.m.
Bol Loops and Right Alternative Rings: Some Connections.
Edgar G Goodaire*, Memorial University of Newfoundland
(9532075) 
5:00 p.m.
On matrix loops over near fields and nonassociative division algebras.
Clifton E. Ealy*, Western Michigan University
(9530829) 
5:30 p.m.
On the theory of Bruck loops.
Liudmila L Sabinina*, Facultad de Ciencias, UAEM
(95320243)

3:00 p.m.

Saturday April 8, 2000, 3:00 p.m.5:45 p.m.
Special Session on Index Theory and Topology, II
Room 119, DeBartolo Hall
Organizers:
John Roe, Pennsylvania State University roe@math.psu.edu
Stephan Stolz, University of Notre Dame stolz.1@nd.edu
Bruce Williams, University of Notre Dame williams.4@nd.edu

3:00 p.m.
A general splitting formula for the spectral flow.
Paul A Kirk*, Indiana University
Mark Daniel, API, Inc.
(9535841) 
4:00 p.m.
An AtiyahSinger Topological Index for Proper Actions of Countable Discrete Groups.
Jody Trout*, Dartmouth College
(9531930) 
5:00 p.m.
Index theories associated to $c_0$ coarse structures.
John Roe*, Penn State University
Nicholas Wright, Penn State University
(95358304)

3:00 p.m.

Saturday April 8, 2000, 3:00 p.m.5:20 p.m.
Special Session on Number Theory, Algorithms, and Cryptography, II
Room 118, DeBartolo Hall
Organizers:
Eric Bach, University of Wisconsin, Madison bach@cs.wisc.edu
Jonathan Sorenson, Butler University sorenson@butler.edu

3:00 p.m.
Prime numbers with few one bits in their binary representation.
Samuel S Wagstaff*, Purdue University
(9531191) 
3:30 p.m.
Number theory and formal languages.
Jeffrey O Shallit*, University of Waterloo
(9531113) 
4:30 p.m.
On the Method of ``XL'' and its Inefficiency Against TTM.
T. Moh*, Purdue University
(95394350) 
5:00 p.m.
Faster multiplication of integers.
Daniel J. Bernstein*, University of Illinois at Chicago
(95311349)

3:00 p.m.

Saturday April 8, 2000, 3:00 p.m.5:50 p.m.
Special Session on Representations of Groups and Related Objects, II
Room 102, DeBartolo Hall
Organizers:
Chris Bendel, University of Wisconsin, Stout bendelc@uwstout.edu
George McNinch, University of Notre Dame mcninch.1@nd.edu

3:00 p.m.
Unipotent elements, tilting modules, and saturation.
Gary M Seitz*, University of Oregon
(9532037) 
3:30 p.m.
Algebraic groups in positive characteristic and affine Lie algebas.
Leonard L Scott*, The University of Virginia
(95320222) 
4:00 p.m.
On comparing the cohomology of general linear and symmetric groups.
Alexander S Kleshchev, University of Oregon
Daniel K Nakano*, Utah St. University
(9532068) 
4:30 p.m.
On Comparing the Cohomology of Algebraic Groups, Finite Chevalley Groups and Frobenius Kernels.
Christopher P Bendel, University of Wisconsin, Stout
Daniel K Nakano, Utah State University
Cornelius Pillen*, University of South Alabama
(95320206) 
5:00 p.m.
Affine Lie algebras and Witt vectors.
Edward T Cline, University of Oklahoma
Brian J Parshall*, University of Virginia
Leonard L Scott, University of Virginia
(95320197) 
5:30 p.m.
On transfer from reductive groups to affine Lie algebras.
Edward Cline*, University of Oklahoma
Brian Parshall, University of Virginia
Leonard Scott, University of Virginia
(95320215)

3:00 p.m.

Saturday April 8, 2000, 3:00 p.m.6:20 p.m.
Special Session on Cooperative Learning in Undergraduate Mathematics Education,II
Room 210, DeBartolo Hall
Organizers:
Nahid Erfan, University of Notre Dame erfan.1@nd.edu
Vic Perera, Kent State University pererav@trumbull.kent.edu

3:00 p.m.
Interactive Uses of Technology, Group Learning, Discovery Approach.
Martha Aliaga*, University of Michigan
(95397108) 
4:00 p.m.
Collaborative Learning Outside the Class.
Nahid A Erfan*, University of Notre Dame
(9539755) 
4:30 p.m.
Cooperative learning and mathematics teacher education.
Anne E Brown*, Indiana University South Bend
(95397217) 
5:00 p.m.
Title: Teaching Hypothesis Test through Cooperative Learning (CL).
Aklilu Zeleke*, Alma College
(9539717) 
5:30 p.m.
Cooperative Learning: A Moderate's Approach.
Beverly Reed*, Kent State University
(9539735) 
6:00 p.m.
Teaching and Learning Geometry: An inquiry approach using a variety of group settings.
Jay Jahangiri, Kent State University
Tom Delaney, Kent State University
Michael Mikusa*, Kent State University
(95397199)

3:00 p.m.

Saturday April 8, 2000, 3:00 p.m.5:20 p.m.
Special Session on Symbolic Dynamics, II
Room 207, DeBartolo Hall
Organizers:
William Geller, Indiana UnivPurdue Univ Indianapolis wgeller@math.iupui.edu
Nicholas S. Ormes, University of Texas, Austin ormes@math.utexas.edu

3:00 p.m.
Knots, groups and symbolic dynamical systems.
Daniel S Silver*, University of South Alabama
Susan G Williams, University of South Alabama
(95337330) 
3:30 p.m.
Links and algebraic $Z^d$actions.
Daniel S Silver, University of South Alabama
Susan G Williams*, University of South Alabama
(95337312) 
4:00 p.m.
Complexity in symbolic dynamics.
Sebastien S Ferenczi*, CNRS, Tours, FRANCE
(9532845) 
4:30 p.m.
Generalized rotations in dimension two and their underlying symbolic and arithmetic structures.
Luca Q Zamboni*, University of North Texas
(95337188) 
5:00 p.m.
Symbolic dynamics for billiards.
Eugene Gutkin*, University of Southern California
(9533739)

3:00 p.m.

Saturday April 8, 2000, 3:00 p.m.5:45 p.m.
Special Session on Algebraic Methods in Statistics, II
Room 216, DeBartolo Hall
Organizers:
Marlos Viana, University of Illinois, Chicago viana@uic.edu

3:00 p.m.
Normal Forms and Exponential Generating Functions for the Hypergeometric Distribution.
Ian H Dinwoodie*, Tulane University
(9536282) 
4:00 p.m.
Algebraic Systems of Generating Functions in Random Walk Problems.
Steven P Lalley*, University of Chicago
(9536092) 
5:00 p.m.
Statistical models and category representations.
Peter McCullagh*, University of Chicago
(9536207)

3:00 p.m.

Saturday April 8, 2000, 3:00 p.m.5:45 p.m.
Special Session on Geometry and Analysis in Carnot Carath\'eodory Spaces, II
Room 217, DeBartolo Hall
Organizers:
Scott Pauls, Rice University pauls@math.rice.edu

3:00 p.m.
Surface measures in some CarnotCarath\'eodory Spaces.
Francesco Serra Cassano*, University of Trento
Roberto Monti, University of Trento
(95349173) 
4:00 p.m.
A Notion of Rectifiability Modelled on Carnot Groups.
Scott D Pauls*, Rice University
(95353105) 
5:00 p.m.
Differentiability and Area formula on Stratified Nilpotent Lie groups.
Valentino Magnani*, Scuola Normale Superiore
(95328155)

3:00 p.m.

Saturday April 8, 2000, 3:00 p.m.4:40 p.m.
Session on Contributed Papers
Room 214, DeBartolo Hall

3:00 p.m.
Injective Comodules for $2\times 2$ Quantum Matrices.
William Chin, DePaul University
Leonid Krop*, DePaul University
(9532024) 
3:15 p.m.
Some Units in Hecke Algebras.
Frank A Casabianca*, Auburn University
Randall R Holmes, Auburn University
(95320204) 
3:30 p.m.
Rationality of Certain Linear Automorphisms on rational Function Fields.
Hamza Ahmad, Lincoln University
Mowaffaq Hajja*, American University of Sharjah
Mingchang Kang, Taiwan National University
(95312132) 
3:45 p.m.
The Tailsum Partial Order on Certain Products from a Prime Sequence.
Michael E Detlefsen*, Slippery Rock University
(9531322) 
4:00 p.m.
Breakdown of strong convergence in nonlinear viscoelasticity.
Mikhail M Shvartsman*, University of St. Thomas
(95335334) 
4:15 p.m.
Extension of nonlinear operators and application to problems with nonhomogeneous boundary conditions.
Rouslan V Krechetnikov*, Aerospace and Mechanical Engineering/University of Notre Dame
(95335295) 
4:30 p.m.
The speed of invasion for integrodifference equations with Allee growth functions.
MeiHui Wang*, University of Tennessee, Knoxville
Mark Kot, University of Tennessee, Knoxville
Michael G. Neubert, Woods Hole Oceanographic Institution
(9539210)

3:00 p.m.
Sunday April 9, 2000

Sunday April 9, 2000, 8:00 a.m.12:00 p.m.
Joint Meetings Registration
First Floor Lobby, Center for Continuing Education, McKenna Hall 
Sunday April 9, 2000, 8:00 a.m.10:50 a.m.
Special Session on Differential Geometry and Its Applications, I
Room 155, DeBartolo Hall
Organizers:
Jianguo Cao, University of Notre Dame cao.7@nd.edu
Brian Smyth, University of Notre Dame smyth.1@nd.edu
Frederico Xavier, University of Notre Dame xavier.1@nd.edu

8:00 a.m.
Gradient comparison theorems for harmonic functions on Riemannian manifolds.
Albert Borbely*, Kuwait University, Kuwait
(95353226) 
8:30 a.m.
Sharp growth rate for generalized solutions evolving by mean curvature plus a forcing term.
Yonghoi Koo*, Instituto Superior Tecnico
Robert Gulliver, University of Minnesota
(95335239) 
9:00 a.m.
The volumepreserving mean curvature flow on surfaces.
Nicholas Alikakos, University of Athens (Greece)
Alex Freire*, University of Tennessee
(95353258) 
9:30 a.m.
Curvature bounds for warped products of metric spaces.
Stephanie B. Alexander*, UIUC
Richard L. Bishop, UIUC
(95353348) 
10:00 a.m.
Spines and homology of thin Riemannian manifolds with boundary.
Stephanie B. Alexander, UIUC
Richard L. Bishop*, UIUC
(95353347) 
10:30 a.m.
Kodaira dimensions and hyperbolicity of nonpositively curved Kahler manifolds.
Fangyang Zheng*, ohio state university
(9535370)

8:00 a.m.

Sunday April 9, 2000, 8:00 a.m.10:50 a.m.
Special Session on Nonlinear Partial Differential Equations, III
Room 136, DeBartolo Hall
Organizers:
Qing Han, University of Notre Dame Qing.Han.7@nd.edu
Bei Hu, University of Notre Dame Bei.Hu.1@nd.edu
HongMing Yin, Washington State University

8:00 a.m.
Singular Solution of Quasilinear Parabolic Equation with Absorption.
Mingxin Wang*, Department of Applied Mathematics, Southeast University, Nanjing 210018, P.R.China
(95335317) 
8:30 a.m.
Asymptotic behavior of solutions to the anharmonic oscillator model from nonlinear optics.
Frank Jochmann*, HumboldtUniversitaet Berlin
(9533505) 
9:00 a.m.
Existence of Euler equations for $L^\infty$ variational problems.
Robert R Jensen*, Loyola University Chicago
(95335207) 
9:30 a.m.
Global Stability of Discontinuous Entropy Solutions for Some Nonlinear Partial Differential Equations.
GuiQiang G Chen*, Northwestern University
(95376186) 
10:00 a.m.
Some nonlinear nonhyperbolic systems of conservation laws with wellposed initial value problems.
Michael Sever*, The Hebrew University
(95335314) 
10:30 a.m.
Finitetime Blowup of Solutions to Nonlinear Wave Equations.
Zhengfang Zhou*, Michigan State University
Eugene Belchev, Michigan State University
Mariusz Kepka, University of Lodz, Poland
(95335270)

8:00 a.m.

Sunday April 9, 2000, 8:00 a.m.11:25 a.m.
Special Session on Quasigroups and Loops and Their Applications, III
Room 131, DeBartolo Hall
Organizers:
Michael K. Kinyon, Indiana University South Bend mkinyon@iusb.edu
J. D. Phillips, Saint Mary's College of California phillips@stmarysca.edu

8:00 a.m.
Loops represented by permutation sets and fibered Kloops: some results of the Italian research group.
Rita Capodaglio*, University of Bologna, Italy
(95320355) 
8:30 a.m.
Generators of Nonassociative Simple Moufang Loops.
Petr Vojt\v echovsk\'y*, Department of Mathematics, Iowa State University
(95320255) 
9:00 a.m.
Orbit Decomposition in the Distinct power of a Permutation representation.
JiYoung Choi*, Department of Mathematics/Iowa State University
(95305292) 
9:30 a.m.
Minimally nonassociative commutative Moufang loops.
Orin Chein*, Temple University
Edgar G. Goodaire, Memorial University of Newfoundland
(9532032) 
10:00 a.m.
Quasigroup homogeneous spaces.
Jonathan D.H. Smith*, Iowa State University
(95320102) 
10:30 a.m.
Some problems connected to the loop determinant.
Ken Johnson*, Penn State University, Abington College
(95320354) 
11:00 a.m.
Polyabelian quasigroups and Boolean completeness.
Cristopher D Moore*, University of New Mexico
Francois Lemieux, Universite du Quebec a Chicoutimi
Denis Therien, McGill University
(9531783)

8:00 a.m.

Sunday April 9, 2000, 8:00 a.m.12:00 p.m.
Exhibit and Book Sale
First Floor Lobby, Center for Continuing Education, McKenna Hall 
Sunday April 9, 2000, 8:30 a.m.11:20 a.m.
Special Session on Integrable Systems and Nonlinear Waves, III
Room 141, DeBartolo Hall
Organizers:
Mark S. Alber, University of Notre Dame mark.s.alber.1@nd.edu
Gerard Misiolek, University of Notre Dame misiolek.1@nd.edu

8:30 a.m.
Advection enhanced reactiondiffusion.
Leonid Ryzhik*, University of Chicago
Peter Constantin, University of Chicago
A Kiselev, University of Chicago
(95335281) 
9:00 a.m.
Elementary coadjoint orbits, Integrable Lattices and Compatible Poisson Structures.
Michael Gekhtman*, University of Notre Dame
Leonid Faybusovich, University of Notre Dame
(95337291) 
9:30 a.m.
Geometric analysis of the averaged Euler equations.
Steve Shkoller*, UC Davis
(95337283) 
10:00 a.m.
Stability of solitary waves of a nonliner dispersive Hamiltonian system.
Y Li*, Stevens Institute of Technology
(95335284) 
10:30 a.m.
Peakons, Strings, and the Finite Toda Lattice.
Jacek Szmigielski*, University of Saskatchewan
Richard Beals, Yale University
David Sattinger, Utah State University
(95337285) 
11:00 a.m.
Computing with Riemann surfaces: a toolbox.
Bernard Deconinck*, University of Washington
(95337282)

8:30 a.m.

Sunday April 9, 2000, 8:30 a.m.11:20 a.m.
Special Session on Algebraic Coding Theory, III
Room 126, DeBartolo Hall
Organizers:
Judy Walker, University of Nebraska jwalker@math.unl.edu
Jay Wood, Purdue University, Calumet wood@calumet.purdue.edu

8:30 a.m.
About Convolutional Codes with Large Free Distance.
Roxana N Smarandache*, University of Notre Dame
(95394259) 
9:00 a.m.
Bounding minimum distances of cyclic codes using algebraic geometry.
Nigel Boston*, UIUC
(95314169) 
9:30 a.m.
The Weierstrass gap set of an $m$tuple and the minimum distance of an associated Goppa code.
Gretchen L Matthews*, University of Tennessee
(95394248) 
10:00 a.m.
Remarks on the performance of linear codes in a symmetric channel.
Donald W Newhart, NSA
Mark S Vincent*, NSA
(95394332) 
10:30 a.m.
An alternative approach to error evaluation for onepoint codes.
Michael E. O'Sullivan*, National University of Ireland, Cork
Ralf K\"otter, University of Illinois
(95394318) 
11:00 a.m.
Algebraic Soft Decision Decoding of ReedSolomon Codes.
Ralf Koetter*, University of Illinois at UrbanaChampaign
Alexander Vardy, University of California, San Diego
(95394298)

8:30 a.m.

Sunday April 9, 2000, 8:30 a.m.11:20 a.m.
Special Session on Differential Inequalities and Applications, III
Room 208, DeBartolo Hall
Organizers:
Paul W. Eloe, University of Dayton eloe@neelix.udayton.edu

8:30 a.m.
Discrete second order boundary value problems associated with the eigenvalue problem for two classes of structured matrices.
William Frederick Trench*, Trinity University
(95339166) 
9:00 a.m.
WeylTitchmarsh $M$function asymptotics for matrixvalued Schr\"odinger operators.
Steve Clark*, University of MissouriRollaof MissouriRolla
Fritz Gesztesy, University of Missouri
(95334288) 
9:30 a.m.
Qualitative Properties of Solutions to Certain Differential Inequalities.
Gary D Jones*, Murray State University
(95334177) 
10:00 a.m.
Monotone approximations of unstable solutions.
Philip Korman*, University of Cincinnati
(95334143) 
10:30 a.m.
Positive periodic solutions for neutral differential equations.
Youssef N Raffoul*, University of Dayton
(9533486) 
11:00 a.m.
Stability properties of linear Volterra integrodifferential equations with nonlinear perturbation.
Muhammad N Islam*, University of Dayton
Youssef N Raffoul, University of Dayton
(9534599)

8:30 a.m.

Sunday April 9, 2000, 8:30 a.m.11:20 a.m.
Special Session on Representations of Groups and Related Objects, III
Room 102, DeBartolo Hall
Organizers:
Chris Bendel, University of Wisconsin, Stout bendelc@uwstout.edu
George McNinch, University of Notre Dame mcninch.1@nd.edu

8:30 a.m.
Simple modules with character height zero and exceptional weight for the restricted Special algebra,Hamiltonian algebra and Contact algebra.
Chaowen Zhang*, Auburn University
(9531706) 
9:00 a.m.
Projective representations of symmetric groups in characteristic p.
Jonathan Brundan, University of Oregon
Alexander Kleshchev*, University of Oregon
(95320134) 
9:30 a.m.
Lusztig induction in finite classical groups.
Bhama Srinivasan*, University of Illinois at Chicago
(95320256) 
10:00 a.m.
A new characterization of quasihereditary algebras: matrix filtration.
Zongzhu Lin*, Kansas State University
(95316309) 
10:30 a.m.
Presenting Schur algebras.
Stephen Doty*, Loyola University Chicago
Anthony Giaquinto, Loyola University Chicago
(95316335) 
11:00 a.m.
Irreducible modules of prime characteristic downup algebras.
Jeff Hildebrand*, University of WisconsinMadison
(95316260)

8:30 a.m.

Sunday April 9, 2000, 8:30 a.m.11:15 a.m.
Special Session on Cooperative Learning in Undergraduate Mathematics Education, III
Room 210, DeBartolo Hall
Organizers:
Nahid Erfan, University of Notre Dame erfan.1@nd.edu
Vic Perera, Kent State University pererav@trumbull.kent.edu

8:30 a.m.
Designing Assessment Activities to Encourage Productive Collaboration.
Barbara E Reynolds*, Cardinal Stritch University
(95397189) 
9:30 a.m.
Using Cooperative Learning in Both Standard Size and Large Lecture Classes in the Mathematical Sciences.
Richard J Maher*, Loyola University Chicago
(9539709) 
10:00 a.m.
Bringing Collaborative Learning to Notre Dame.
Eileen M Kolman*, University of Notre Dame
(95397121) 
10:30 a.m.
Attitude and performance of busines calculus students after using a cooperative learning method in a previous mathematics course.
Rose K Hart*, The Ohio State University at Newark
(9539777)

8:30 a.m.

Sunday April 9, 2000, 8:30 a.m.11:15 a.m.
Special Session on Algebraic Methods in Statistics, III
Room 216, DeBartolo Hall
Organizers:
Marlos Viana, University of Illinois, Chicago viana@uic.edu

8:30 a.m.
On the general Wishart distribution on homogeneous cones.
Steen A. Andersson*, Indiana University
(95362131) 
9:30 a.m.
Some moments of the Wishart distribution.
Helene M Massam*, University of Virginia
(9536273) 
10:30 a.m.
Maximum covariance difference test for equality of two covariance matrices.
Akimichi Takemura*, University of Tokyo
Satoshi Kuriki, Ths Institute of Statistical Mathematics
(9536280)

8:30 a.m.

Sunday April 9, 2000, 8:30 a.m.11:15 a.m.
Special Session on Geometry and Analysis in Carnot Carath\'eodory Spaces, III
Room 217, DeBartolo Hall
Organizers:
Scott Pauls, Rice University pauls@math.rice.edu

8:30 a.m.
Singularity of the CarnotCaratheodory spheres.
Monique Chyba*, Princeton University
(9534962) 
9:30 a.m.
Fully Nonlinear Equations on the Heisenberg Group.
Juan J Manfredi*, University of Pittsburgh
(95335146) 
10:30 a.m.
On Absolute Minimizing Lipschitz Extensions.
Thomas J Bieske*, University of Arkansas
(95335250)

8:30 a.m.

Sunday April 9, 2000, 9:00 a.m.11:20 a.m.
Special Session on Commutative Algebra, III
Room 129, DeBartolo Hall
Organizers:
Juan Migliore, University of Notre Dame migliore.1@nd.edu
Chris Peterson, Colorado State University peterson@math.colostate.edu

9:00 a.m.
Computational methods on Schur complexes.
Imtiaz Manji*, Carleton University
Rafael Sanchez, Instituto Venezolano de Investigaciones Cientificas
(95313185) 
9:30 a.m.
Blowup algebras and homological degree.
Joseph P Brennan*, North Dakota State University
Moira A McDermott, Gustavus Adolphus College
(95313331) 
10:00 a.m.
Finjective rings and Fstable primes.
Florian Enescu*, University of Michigan
(95313208) 
10:30 a.m.
Multigraded modules:a presentation.
Hara Charalambous*, University at Albany, SUNY
(95313305) 
11:00 a.m.
Two extensions of the direct summand conjecture.
Anurag K Singh*, University of Utah
(95313219)

9:00 a.m.

Sunday April 9, 2000, 9:00 a.m.11:25 a.m.
Special Session on Microlocal Analysis and Partial Differential Equations, III
Room 138, DeBartolo Hall
Organizers:
Nicholas Hanges, CUNY, Lehman College nwhlc@cunyvm.cuny.edu
Alex Himonas, University of Notre Dame alex.a.himonas.1@nd.edu

9:00 a.m.
Harmonic measure estimates for the Dirichlet problem in Htype groups.
Luca Capogna*, University of Arkansas
Nicola Garofalo, Purdue University
DuyMinh Nhieu, Academia Sinica, Taiwan
(95335203) 
9:30 a.m.
Global hypoellipticity and the bracket condition.
Gerson Petronilho*, Federal University of Sao Carlos
Alex Himonas, University of Notre Dame
(95335328) 
10:00 a.m.
Local $L^2$ results for $\overline{\partial}$ on a singular surface.
Erik Forn Fornaess, The University of Michigan
Sophia Vassiliadou*, The University of Michigan
Klas Diederich, Universitat Wuppertal
(95335327) 
10:30 a.m.
BoundaryLayer solution of the Poincare'type boundary value problem on a Lipschitz domain in $\Bbb R^n$.
Loredana Lanzani*, University of Arkansas
(95335190) 
11:00 a.m.
Resolvents and pwoers of operators on the Heisenberg group.
Daryl N Geller*, SUNY at Stony Brook
(95335103)

9:00 a.m.

Sunday April 9, 2000, 9:00 a.m.11:20 a.m.
Special Session on Several Complex Variables, III
Room 209, DeBartolo Hall
Organizers:
Jeffrey Diller, University of Notre Dame diller.1@nd.edu
Nancy Stanton, Univeristy of Notre Dame stanton.1@nd.edu

9:00 a.m.
Good and Bad Compact sets.
JeanPierre Rosay*, University of Wisconsin
Edgar L. Stout, University of Washington
(95332139) 
10:00 a.m.
Certain classes of pluricomplex Green functions on ${\Bbb C}^n$.
Dan F Coman*, University of Notre Dame
(95332135) 
10:30 a.m.
Jensen measures and boundary values of plurisubharmonic functions.
Frank Wikstr\"om*, Department of Mathematics, UmeaUme\aa{} University
(95332138) 
11:00 a.m.
Bergman representative coordinates at corners.
David E Barrett*, University of Michigan
(95332278)

9:00 a.m.

Sunday April 9, 2000, 9:00 a.m.11:15 a.m.
Special Session on Homotopy Theory, III
Room 101, DeBartolo Hall
Organizers:
William G. Dwyer, University of Notre Dame dwyer.1@nd.edu
Michele Intermont, Kalamazoo College intermon@kzoo.edu

9:00 a.m.
A new construction of the equivariant Adams spectral sequence.
Paul L Shick*, John Carroll University
(95355152) 
9:30 a.m.
``$A$generators for Ideals in the Dickson Algebra''.
Franklin P Peterson*, M.I.T.
V. Giambalvo, University of Connecticut
(9535512) 
10:00 a.m.
Simplicial Model Categories.
Charles Rezk, Institute of Advanced Study
Stefan Schwede, Universitat Bielefeld
Brooke Shipley*, University of Chicago
(9535571) 
10:30 a.m.
Realization Problems as Moduli Problems.
Paul G Goerss*, Northwestern University
(9535598)

9:00 a.m.

Sunday April 9, 2000, 9:00 a.m.11:20 a.m.
Special Session on Symbolic Dynamics, III
Room 207, DeBartolo Hall
Organizers:
William Geller, Indiana UnivPurdue Univ Indianapolis wgeller@math.iupui.edu
Nicholas S. Ormes, University of Texas, Austin ormes@math.utexas.edu

9:00 a.m.
Results on the spectral properties of certain higherdimensional bijective substitution sequences.
Natalie Priebe*, University of Albany
(95337353) 
9:30 a.m.
Topological invariants for substitution tiling spaces.
Nicholas S Ormes*, University of Texas
Charles Radin, University of Texas
Lorenzo Sadun, University of Texas
(95337306) 
10:30 a.m.
Tiling the multidimensional integers and multidimensional sofic shifts.
Ethan M Coven*, Wesleayan University
Natasha Jonoska, University of South Florida
(95337148) 
11:00 a.m.
Life, substitutions and ordered subshifts of finite type.
William Geller, Indiana University  Purdue university Indianapolis
Michal Misiurewicz*, Indiana University  Purdue University Indianapolis
(95337178)

9:00 a.m.

Sunday April 9, 2000, 9:30 a.m.11:15 a.m.
Special Session on Singularities in Algebraic Geometry, III
Room 120, DeBartolo Hall
Organizers:
Sandor Kovacs, University of Chicago kovacs@math.uchicago.edu
Andras Nemethi, Ohio State University nemethi@math.ohiostate.edu

9:30 a.m.
A Vanishing Theorem Toolkit.
Donu Arapura*, Purdue University
(95314180) 
10:30 a.m.
The multiplier ideal is a universal test ideal.
Karen E Smith*, University of Michigan
(95314218)

9:30 a.m.

Sunday April 9, 2000, 9:30 a.m.11:15 a.m.
Special Session on Index Theory and Topology, III
Room 119, DeBartolo Hall
Organizers:
John Roe, Pennsylvania State University roe@math.psu.edu
Stephan Stolz, University of Notre Dame stolz.1@nd.edu
Bruce Williams, University of Notre Dame williams.4@nd.edu

9:30 a.m.
Atiyah's conjecture about integrality of L2Betti numbers.
Thomas Schick*, Penn State University and Universitaet Muenster
(95355154) 
10:30 a.m.
Topology vs. Index theory.
Shmuel Weinberger*, University of Chicago
(95358150)

9:30 a.m.

Sunday April 9, 2000, 11:40 a.m.12:30 p.m.
Invited Address
Penrose tilings and hidden symmetries.
Auditorium, Center for Continuing Education, McKenna Hall
Charles Radin*, University of Texas at Austin
(9535278) 
Sunday April 9, 2000, 2:00 p.m.2:50 p.m.
Invited Address
Invariants of the normal surface singularities.
Auditorium, Center for Continuing Education, McKenna Hall
Andras Nemethi*, Ohio State University
(95314336) 
Sunday April 9, 2000, 3:00 p.m.4:20 p.m.
Special Session on Integrable Systems and Nonlinear Waves, IV
Room 141, DeBartolo Hall
Organizers:
Mark S. Alber, University of Notre Dame mark.s.alber.1@nd.edu
Gerard Misiolek, University of Notre Dame misiolek.1@nd.edu

3:00 p.m.
On the Tidal Motion Around the Earth Complicated by the Circular Geometry of the Ocean's Shape.
Ranis Ibragimov*, University of New Brunswick
(95337287) 
3:30 p.m.
The dynamics of zeros of the solutions to the Schrodinger equation with the elliptic potential.
Yuri Volvovski*, Columbia University
Alexei Akhmetshin, Columbia University
(95337289) 
4:00 p.m.
Generating Formula for the Solutions to the Associativity Equations.
Alexei Akhmetshin*, Columbia University
Igor Krichever, Columbia University
Yuri Volvovsky, Columbia University
(95337290)

3:00 p.m.

Sunday April 9, 2000, 3:00 p.m.4:50 p.m.
Special Session on Several Complex Variables, IV
Room 209, DeBartolo Hall
Organizers:
Jeffrey Diller, University of Notre Dame diller.1@nd.edu
Nancy Stanton, Univeristy of Notre Dame stanton.1@nd.edu

3:00 p.m.
Analytic cohomology in infinite dimensions.
L\'aszl\'o Lempert*, Purdue University
(95332100) 
4:00 p.m.
Conformal maps, monodromy transformations, and nonreversible Hamiltonian systems.
Xianghong Gong*, Oklahoma State University
(95337319) 
4:30 p.m.
Algebraicization of entire Grauert tubes.
Daniel M Burns*, Dept Math, U of Michigan
Raul Aguilar, Dept Math, Tufts Univ
(95332337)

3:00 p.m.

Sunday April 9, 2000, 3:00 p.m.3:50 p.m.
Special Session on Algebraic Coding Theory, IV
Room 126, DeBartolo Hall
Organizers:
Judy Walker, University of Nebraska jwalker@math.unl.edu
Jay Wood, Purdue University, Calumet wood@calumet.purdue.edu

3:00 p.m.
On Weight Distributions of Codes of Planes of Order 9.
Kevin L Chouinard*, Northern VA Comm. College
(95394181) 
3:30 p.m.
The Structure of $1$Generator QuasiTwisted Codes and New Linear Codes.
Nuh Aydin, Department of Mathematics, The OhioState University
Irfan Siap*, Department of Mathematics, The Ohio State University
Dijen K. RayChaudhuri, Department of Mathematics, The OhioState University
(9530579)

3:00 p.m.

Sunday April 9, 2000, 3:00 p.m.5:45 p.m.
Special Session on Singularities in Algebraic Geometry, IV
Room 120, DeBartolo Hall
Organizers:
Sandor Kovacs, University of Chicago kovacs@math.uchicago.edu
Andras Nemethi, Ohio State University nemethi@math.ohiostate.edu

3:00 p.m.
Simple plane curve singularities and log canonical thresholds.
Brendan Hassett*, University of Chicago
(95314294) 
4:00 p.m.
Surface log terminal singularities in positive characteristics.
Kenji Matsuki*, Purdue University
(95314343) 
5:00 p.m.
On Fano 3fold with unique elliptic fibration.
Ivan Cheltsov*, Johns Hopkins University
(95314224)

3:00 p.m.

Sunday April 9, 2000, 3:00 p.m.5:55 p.m.
Special Session on Quasigroups and Loops and Their Applications, IV
Room 131, DeBartolo Hall
Organizers:
Michael K. Kinyon, Indiana University South Bend mkinyon@iusb.edu
J. D. Phillips, Saint Mary's College of California phillips@stmarysca.edu

3:00 p.m.
The exact expression for fundamental fields of a smooth Bol loop in normal coordinates.
Lev V. Sabinin*, University of Quintana Roo
(95320123) 
3:30 p.m.
The presentation of fundamental vector fields of smooth BolBruck loops in normal coordinates.
Larissa V. Sbitneva*, University of Quintana Roo
(95320124) 
4:00 p.m.
Sabinin Spaces and Moufang Loops.
Nelson Castaneda*, Central Connecticut State University
(9532026) 
4:30 p.m.
Towards nonassociative gauge theories.
Alexander I Nesterov*, Guadalajara University
(95320299) 
5:30 p.m.
On the Hausdorff series of local analytic Bruck loops.
Gabor P Nagy*, Bolyai Institute, Hungary
(95322192)

3:00 p.m.

Sunday April 9, 2000, 3:00 p.m.3:45 p.m.
Special Session on Index Theory and Topology, IV
Room 119, DeBartolo Hall
Organizers:
John Roe, Pennsylvania State University roe@math.psu.edu
Stephan Stolz, University of Notre Dame stolz.1@nd.edu
Bruce Williams, University of Notre Dame williams.4@nd.edu

3:00 p.m.
Counterexamples to the BaumConnes conjectures.
Nigel Higson*, Penn State University
(95319227)

3:00 p.m.

Sunday April 9, 2000, 3:00 p.m.3:50 p.m.
Special Session on Representations of Groups and Related Objects, IV
Room 102, DeBartolo Hall
Organizers:
Chris Bendel, University of Wisconsin, Stout bendelc@uwstout.edu
George McNinch, University of Notre Dame mcninch.1@nd.edu

3:00 p.m.
Extensions of ``Thickened" Verma Modules of the Virasoro Lie Algebra.
Karen S Brown*, University of Notre Dame
(95317170) 
3:30 p.m.
Kinvariant differential operators for a multiplicity free action.
R. Michael Howe*, University of WisconsinEau Claire
Gail Ratcliff, University of MissouriSt. Louis
(95322193)

3:00 p.m.

Sunday April 9, 2000, 3:00 p.m.5:50 p.m.
Special Session on Cooperative Learning in Undergraduate Mathematics Education, IV
Room 210, DeBartolo Hall
Organizers:
Nahid Erfan, University of Notre Dame erfan.1@nd.edu
Vic Perera, Kent State University pererav@trumbull.kent.edu

3:00 p.m.
Cooperative learning through undergraduate research.
Anant P Godbole*, Michigan Tech University
(9530020) 
3:30 p.m.
Randomized and Homogeneous Cooperative Groups.
Guy G Vandegrift*, Purdue University North Central
(9539725) 
4:00 p.m.
Counting on Cooperative Learning to Strive for Excellence in Undergraduate Mathematics.
Aloysius B Kasturiarachi*, Kent State University
(9539752) 
5:00 p.m.
Another Approach to Cooperative Learning: LACE Cycle and Technology.
Vic S Perera*, Kent State University
(95397106) 
5:30 p.m.
Active learning in a multisection Calculus Course.
Alex Himonas*, University of Notre Dame
(9539761)

3:00 p.m.

Sunday April 9, 2000, 3:00 p.m.5:45 p.m.
Special Session on Algebraic Methods in Statistics, IV
Room 216, DeBartolo Hall
Organizers:
Marlos Viana, University of Illinois, Chicago viana@uic.edu

3:00 p.m.
Stiefel manifolds, moving frames of reference, and vector cardiograms.
Ted C Chang*, University of Virginia
(95362122) 
4:00 p.m.
Some Results on Patterned Matrices.
Dietrich von Rosen*, Swedish University of Agricultural Sciences
Tonu Kollo, University of Tartu
(9536246) 
5:00 p.m.
The covariance structure of random permutation matrices.
Marlos Viana*, University of Illinois at Chicago
(9536260)

3:00 p.m.

Sunday April 9, 2000, 3:00 p.m.4:45 p.m.
Special Session on Geometry and Analysis in Carnot Carath\'eodory Spaces, IV
Room 217, DeBartolo Hall
Organizers:
Scott Pauls, Rice University pauls@math.rice.edu