AMS Sectional Meeting Program by Day
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1999 AMS Western Section Meeting
Salt Lake City, UT, September 2526, 1999
Meeting #946
Associate secretaries:
Bernard Russo, AMS
brusso@math.uci.edu
Saturday September 25, 1999

Saturday September 25, 1999, 8:00 a.m.4:30 p.m.
Meeting Registration
outside Saltair and Collegiate Rooms, Union Building

Saturday September 25, 1999, 8:00 a.m.10:50 a.m.
Special Session on Complex Variables and Operator Theory, I
Room 236, Orson Spencer Hall
Organizers:
Siqi Fu, University of Wyoming sfu@uwyo.edu
Farhad Jafari, University of Wyoming fjafari@uwyo.edu
Peter Polyakov, University of Wyoming polyakov@ledaig.uwyo.edu

8:00 a.m.
Canonical conjugations at fixed points other than the DenjoyWolff point.
Pietro PoggiCorradini*, Kansas State University
(9463008)

8:30 a.m.
$L^2$ existence theorems for $\bar\partial_b$ on Lipschitz boundaries.
MeiChi Shaw*, University of Notre Dame
(9463265)

9:00 a.m.
Sobolev estimate for $\partial_b$ on the boundary of convex domains in ${\bf C}^2$.
Michael Christ, University of California, Berkeley
SongYing Li*, University of California, Irvine
(94632100)

9:30 a.m.
Polynomial Approximation on ThreeDimensional Real Analytic Submanifolds of ${\Bbb C\/}^n$.
John T. Anderson, College of the Holy Cross
Alexander J. Izzo*, Bowling Green State University
John Wermer, Brown University
(9463296)

10:00 a.m.
A New Result About the Dimensions of the Automorphism Groups of Domains.
Alexander V Isaev, The Australian National University
Steven G Krantz*, Washington University
(9463264)

Saturday September 25, 1999, 8:00 a.m.10:50 a.m.
Special Session on Commutative Algebra, I
Room 232, Orson Spencer Hall
Organizers:
Paul Roberts, University of Utah roberts@math.utah.edu
Roger Wiegand, University of Nebraska rwiegand@math.unl.edu

8:00 a.m.
The LCM lattice.
Vesselin N. Gasharov*, Cornell University
Irena V. Peeva, Cornell University
Volkmar Welker, Technische Universit\"at Berlin
(9461311)

8:30 a.m.
A new class of ladder determinantal varieties.
N. Gonciulea, University of Michigan
C. Miller*, University of Michigan
(9461355)

9:00 a.m.
Monomialization of Morphisms.
S. Dale Cutkosky*, University of Missouri
(9461471)

9:30 a.m.
The Alexander Duality Functors and Local Duality with Monomial Support.
Ezra N. Miller*, University of California, Berkeley
(9461333)

10:00 a.m.
Toric Hilbert Schemes.
Irena V. Peeva*, Cornell University
Mike Stillman, Cornell University
(9461309)

10:30 a.m.
Lagrangian subbundles and codimension 3 subcanonical subschemes.
David Eisenbud, UC Berkeley
Sorin E Popescu*, Columbia University
Charles Walter, University of Nice
(94614110)

Saturday September 25, 1999, 8:00 a.m.4:30 p.m.
Exhibit and Book Sale
Collegiate Room, Union Building

Saturday September 25, 1999, 8:20 a.m.10:50 a.m.
Special Session on Microlocal Analysis and Applications, I
Room 237, Orson Spencer Hall
Organizers:
Gunther Uhlmann, University of Washington gunther@math.washington.edu
Maciej Zworski, University of California, Berkeley zworski@math.berkeley.edu

8:20 a.m.
To be announced.
Richard B. Melrose*, Massachusetts Institute of Technology
(94635130)

9:00 a.m.
Wave Equations with Low Regularity Coefficients.
Hart F Smith*, University of Washington, Seattle
(9463582)

9:40 a.m.
Sharp Spectral Asymptotics for Operators with NonSmooth Coefficients.
Victor Ivrii*, University of Toronto
(9463532)

10:20 a.m.
Existence of resonances for metric perturbation of the Euclidean Laplacian in even dimensional spaces.
SiuHung Tang*, University of California, Berkeley
(94635107)

Saturday September 25, 1999, 8:30 a.m.10:20 a.m.
Special Session on Ergodic Theory of Stochastic Processes, I
Room 233, Orson Spencer Hall
Organizers:
Stewart N. Ethier, University of Utah ethier@math.utah.edu
Davar Khoshnevisan, University of Utah davar@math.utah.edu

8:30 a.m.
Monotonicity of conditional distributions and growth models on trees.
Thomas M Liggett*, UCLA
(9466045)

9:00 a.m.
Random Walks on Stochastic Sceneries.
David A Levin*, University of Connecticut
(9466089)

9:30 a.m.
Joint Large Deviations for Additive Functionals of Harris Recurrent Markov Chains.
Xia Chen*, University of Utah
(9466085)

10:00 a.m.
Random logistic maps.
Krishna B Athreya*, Iowa State University
(9466084)

Saturday September 25, 1999, 8:30 a.m.10:50 a.m.
Special Session on Ergodic and Number Theory, I
Room 234, Orson Spencer Hall
Organizers:
Robert Burton, Oregon State University bob@orst.edu
Thomas Schmidt, Oregon State University toms@math.orst.edu

8:30 a.m.
Geodesics on Riemann Surfaces with Ramification Points of Order Greater than 2.
Mark Sheingorn*, CUNY  Baruch
(9463042)

9:00 a.m.
Veech groups and polygonal coverings.
Pascal Hubert, Institut de Math\'ematiques de Luminy
Thomas A Schmidt*, Oregon State University
(94630115)

9:30 a.m.
Geodesic flow on nonpositively curved length spaces.
Christopher M Judge*, Indiana University
(9463777)

10:00 a.m.
Periodic and singular geodesics on flat surfaces, with applications to billiards.
Eugene Gutkin*, University of Southern California
(9463797)

10:30 a.m.
A tessellation associated to a quadratic differential.
William A Veech*, Rice University
(9463761)

Saturday September 25, 1999, 9:00 a.m.10:50 a.m.
Special Session on Arithmetical Algebraic Geometry, I
Room 231, Orson Spencer Hall
Organizers:
Minhyong Kim, University of Arizona kim@math.arizona.edu
Wieslawa Niziol, University of Utah niziol@math.utah.edu

9:00 a.m.
The BrauerManin Obstruction for $0$cycles of degree $1$.
Victor Scharaschkin*, University of Southern California
(9461114)

9:30 a.m.
A conjecture of Milne and its applications.
Adrian Vasiu*, University of Utah, Salt Lake City
(9461443)

10:00 a.m.
On the crystalline cohomology of Frobeniussplit varieties.
Kirti Joshi*, University of Arizona
(94614119)

10:30 a.m.
Distribution of almost division points.
ShouWu Zhang*, Columbia University
(9461162)

Saturday September 25, 1999, 9:00 a.m.10:50 a.m.
Special Session on Numerical Methods for Partial Differential Equations, I
Room 235, Orson Spencer Hall
Organizers:
Benito Chen, Institute for Scientific Study, University of Wyoming
Junping Wang, Institute for Scientific Study, University of Wyoming wang@everest.uwyo.edu

9:00 a.m.
Large Finite Volume Element Methods in Porous Media Flow.
Richard E Ewing*, ISC, Texas A&M University
Raytcho Lazarov, Texas A&M University
Yanping Lin, Texas A&M University
(9463588)

9:30 a.m.
Development of an adaptive mixed finite element simulator for coupled geomechanics and fluid flow problems.
Hongsen Chen*, University of Wyoming
(94635113)

10:00 a.m.
The SincGalerkin Method for Differential Equations with an Application to Oceanography.
Kenneth L Bowers*, Montana State University
Donald F Winter, Department of Physics, University of Redlands
John Lund, Montana State University
(9463594)

10:30 a.m.
Numerical Simulation Of Biofilm Growth at the Pore Scale.
Benito M Chen*, University of Wyoming
Yaqing Li, University of Wyoming
(9463590)

Saturday September 25, 1999, 11:10 a.m.12:00 p.m.
Invited Address
Continued Fraction Algorithms: Dynamics, Convergence, and Stochastics.
Saltair Room, Union Building
Robert M. Burton*, Oregon State University
(94611129)

Saturday September 25, 1999, 1:30 p.m.2:20 p.m.
Invited Address
Harmonic Maps to RTrees.
Saltair Room, Union Building
Richard A Wentworth*, University of California, Irvine
(9465878)

Saturday September 25, 1999, 3:00 p.m.6:20 p.m.
Special Session on Complex Variables and Operator Theory, II
Room 236, Orson Spencer Hall
Organizers:
Siqi Fu, University of Wyoming sfu@uwyo.edu
Farhad Jafari, University of Wyoming fjafari@uwyo.edu
Peter Polyakov, University of Wyoming polyakov@ledaig.uwyo.edu

3:00 p.m.
Commutators on harmonic Bergman spaces.
Zhijian Wu*, University of Alabama
(9464775)

3:30 p.m.
A BeurlingLaxHalmos Theorem for N.P. Kernels.
Tavan T Trent*, University of Alabama
Scott A McCollough, University of Florida
(9464766)

4:00 p.m.
Regularity of the Szeg\H o projection for nonsmooth planar domains.
Loredana Lanzani*, University of Arkansas
Elias Stein, Princeton University
(9463079)

4:30 p.m.
Lempert

4:30 p.m.
Extending holomorphic functions of infinitely many variables.
Laszlo Lempert*, Purdue University
(94646127)

5:00 p.m.
Hermatian metric with constant holomorphic sectional curvature on a convex domain.
WingSum Cheung, University of Hong Kong
Bun Wong*, University of California, Riverside
(9463299)

5:30 p.m.
Some nonlinear representations of the Lorentz group by holomorphic automorphisms of a Lie ball.
Yaakov Friedman, Jerusalem College of Technology
Bernard Russo*, University of California, Irvine
(94632103)

6:00 p.m.
A Transformation formula for the Bergman kernel functions.
Siqi Fu*, The University of Wyoming
(9463259)

Saturday September 25, 1999, 3:00 p.m.4:50 p.m.
Special Session on Arithmetical Algebraic Geometry, II
Room 231, Orson Spencer Hall
Organizers:
Minhyong Kim, University of Arizona kim@math.arizona.edu
Wieslawa Niziol, University of Utah niziol@math.utah.edu

3:00 p.m.
Singularities of the height strata in the moduli of K3 surfaces.
Arthur E Ogus*, University of California, Berkeley
(94614109)

3:30 p.m.
The HodgeArakelov Theory of Elliptic Curves.
Shinichi Mochizuki*, Research Institute for Mathematical Sciences, Kyoto University
(9461137)

4:00 p.m.
Differential modular forms.
Alexandru Buium*, University of New Mexico
(9461110)

4:30 p.m.
Mixed Tate motives and a conjecture of Hain.
Norman P Levin*, University of Minnesota
(9461476)

Saturday September 25, 1999, 3:00 p.m.5:20 p.m.
Special Session on Commutative Algebra, II
Room 232, Orson Spencer Hall
Organizers:
Paul Roberts, University of Utah roberts@math.utah.edu
Roger Wiegand, University of Nebraska rwiegand@math.unl.edu

3:00 p.m.
An Alternative Definition of Serre's Intersection Multiplicity.
CY. Jean Chan*, University of Utah
(9461368)

3:30 p.m.
Vanishing of (co)homology over local rings.
David A Jorgensen*, University of Texas at Arlington
(9461341)

4:00 p.m.
Boundedness of local cohomology for graded affine algebras.
Adela N Vraciu*, University of Michigan
(9461336)

4:30 p.m.
Multiplicities and Localization (preliminary report).
Sean M SatherWagstaff*, University of Utah
(9461330)

5:00 p.m.
Absolute, relative, and stable cohomology of modules of finite Gdimension.
Luchezar L Avramov*, Purdue University
Alex Martsinkovsky, Northeastern University
(94616102)

Saturday September 25, 1999, 3:00 p.m.5:20 p.m.
Special Session on Ergodic Theory of Stochastic Processes, II
Room 233, Orson Spencer Hall
Organizers:
Stewart N. Ethier, University of Utah ethier@math.utah.edu
Davar Khoshnevisan, University of Utah davar@math.utah.edu

3:00 p.m.
Langevin diffusions and their applications in MCMC.
Richard L Tweedie*, University of Minnesota
(9466056)

3:30 p.m.
Analysis of Fluid Models for Processor Sharing Queues.
Amber L Puha*, California State University San Marcos
Ruth J Williams, University of California San Diego
(9466024)

4:00 p.m.
Brownian Bubbles and Local Time of the Brownian Sheet.
Thomas S Mountford*, UCLA
(9466086)

4:30 p.m.
Discrete spectrum of nonstationary stochastic processes on groups.
Leonid G. Hanin*, Idaho State University
Bertram M. Schreiber, Wayne State University
(9466040)

5:00 p.m.
Representations and limits for functionals of stochastic processes.
S. Borovkova,
Robert M Burton*, Oregon State University
H. Dehling,
(94660121)

Saturday September 25, 1999, 3:00 p.m.6:10 p.m.
Special Session on Microlocal Analysis and Applications, II
Room 237, Orson Spencer Hall
Organizers:
Gunther Uhlmann, University of Washington gunther@math.washington.edu
Maciej Zworski, University of California, Berkeley zworski@math.berkeley.edu

3:00 p.m.
Semiclassical resolvent estimates for trapping perturbations.
Vesselin Petkov*, Universite de Bordeaux I
(9468149)

3:40 p.m.
Recovering asymptotics of some perturbations from fixed energy scattering data.
Tanya J Christiansen*, University of Missouri
Mark S Joshi, NatWest,London, England
(9463587)

4:20 p.m.
Characteristic Strichartz Estimates.
Allan Greenleaf*, University of Rochester
Gunther Uhlmann, University of Washington
(9463583)

5:00 p.m.
Lower bound of the number of Rayleigh resonances.
Plamen Stefanov*, East Carolina University
(9463546)

5:40 p.m.
Inverse Scattering on Asymptotically Hyperbolic Spaces.
Ant\^onio C S\'a Barreto*, Purdue University
Mark S Joshi, University of Cambridge
(9463544)

Saturday September 25, 1999, 3:00 p.m.5:50 p.m.
Special Session on Numerical Methods for Partial Differential Equations, II
Room 235, Orson Spencer Hall
Organizers:
Benito Chen, Institute for Scientific Study, University of Wyoming
Junping Wang, Institute for Scientific Study, University of Wyoming wang@everest.uwyo.edu

3:00 p.m.
A Numerical Study of Fluid Mixing in Multiphase Flows in Heterogeneous Porous Media.
Frederico Furtado*, University of Wyoming
(94635112)

3:30 p.m.
A Family of Numerical Methods for Stiffly Forced Conservation Laws.
C Hillyard, University of Arizona
J Koebbe*, Utah State University
(94635105)

4:00 p.m.
Models of lowspeed flow for nearcritical fluids.
Diane L Denny*, University of Wyoming
(94635106)

4:30 p.m.
Multigrid Method and High Order Compact Scheme for Solving Boundary Layer Problems on Nonuniform Grids.
Ge Lixin, University of Kentucky
Jun Zhang*, University of Kentucky
(94665111)

5:00 p.m.
Mixed finite element methods for variational inequalities.
Hong Huang, Texas A&M
Junping Wang*, University of Wyoming
Yongjun Yang, University of Wyoming
(94635122)

5:30 p.m.
Mass conservation and long time error control.
Tong Sun*, Texas A and M University
(94635126)

Saturday September 25, 1999, 3:00 p.m.5:20 p.m.
Special Session on Ergodic and Number Theory, II
Room 234, Orson Spencer Hall
Organizers:
Robert Burton, Oregon State University bob@orst.edu
Thomas Schmidt, Oregon State University toms@math.orst.edu

3:00 p.m.
The mother of all continued fractions.
Karma Dajani*, Universiteit Utrecht
Cor Kraaikamp, TUDelft
(94628120)

3:30 p.m.
Mixing Measures Achieve Nearly Maximal Entropy in $\mathbb Z^d$ Shifts of Finite Type with Uniform Filling.
E. Arthur Robinson, Jr., George Washington University
Ayse A Sahin*, North Dakota State University
(9463791)

4:00 p.m.
Subshifts of a higherdimensional shift of finite type.
Anthony N Quas*, University of Memphis
Paul B Trow, University of Memphis
(9465898)

4:30 p.m.
$L^q$ densities and $q$dimensions.
Mariusz Urbanski*, University of North Texas
(9463748)

5:00 p.m.
On the convergence of series of translates of measurable functions.
Zoltan Buczolich, Eotvos Lorand University
JeanPierre Kahane, Universit\'e de ParisSud
R. Daniel Mauldin*, University of North Texas
(94628128)

Saturday September 25, 1999, 3:00 p.m.4:55 p.m.
General Session
Room 209, Orson Spencer Hall

3:00 p.m.
Sphere of Influence Graphs and the $L_\infty$Metric.
Thomas Quint*, University of Nevada at Reno
TS Michael, United States Naval Academy
(9460513)

3:15 p.m.
Notions of stability for one dimensional dynamical systems.
TH Steele*, Weber State University
(9462626)

3:30 p.m.
New quasi cyclic linear codes over $\mathbb{F}_5$ and improvements on bounds.
Irfan Siap*, The Ohio State University
Dijen K. RayChaudhuri, The Ohio State University
(9460505)

3:45 p.m.
New ternary quasi cyclic codes and improvements on minimum distances.
Irfan Siap, Department of Mathematics, The Ohio State University
Nuh Aydin*, Department of Mathematics, The Ohio State University
Dijen K. RayChaudhuri, Department of MAthematics, The Ohio State University
(9460512)

4:00 p.m.
A Theory of Resultant of Diophantine Equations.
Kau U Lu*, California State University, Long Beach
(9461128)

4:15 p.m.
Random Sperner Systems.
Michelle K Bylund*, Brigham Young University
Jayadev S Athreya, Iowa State University
Anant P Godbole, Michigan Technological University
Jessica Maia, Washington University
(94660116)

4:30 p.m.
Dominance of geometry over algebraic elegance.
Gunwon Lee, Mr.*, Seoul National University
(9460025)

4:45 p.m.
A Brief History and Discussion on the Calculus.
L.F. M. York*, CFCTE, Inc.
(9460306)
Inquiries: meet@ams.org