AMS Sectional Meeting Full Program
Current as of Tuesday, April 12, 2005 15:09:03
Program 
Deadlines 
Inquiries: meet@ams.org
Western 1993 Sectional Meeting
Salt Lake City, UT, April 910, 1993
Meeting #880
Associate secretaries:
Lance W Small, AMS
lwsmall@ucsd.edu
Friday April 9, 1993

Friday April 9, 1993, 8:30 a.m.10:50 a.m.
Special Session on Hopf Algebras and Hopf Algebra Actions, I
Parlor A, Union Building

8:30 a.m.
Categories of Hopf modules and their reconstruction Hopf algebras.
Bodo Pareigis*, University of Munich, Germany
(8801615)

9:00 a.m.
The Grothendieck group of a Hopf algebra.
Warren D. Nichols, Florida State University
Bettina Richmond*, Western Kentucky University
(8801674)

9:30 a.m.
Solutions to the quantum YangBaxter equation arising from pointed bialgebras.
David E. Radford*, University of Illinois, Chicago
(8801681)

10:00 a.m.
Braided bialgebras and completedtriangular bialgebras.
Richard G. Larson*, University of Illinois, Chicago
Jacob Towber, DePaul University
(8801658)

10:30 a.m.
Right crossed products and duality theorems.
Margaret Beattie*, Mount Allison University, New Brunswick
(8801606)

Friday April 9, 1993, 8:30 a.m.10:45 a.m.
Special Session on Effective Properties of Inhomogeneous Materials, I
Collegiate, Union Building

8:30 a.m.
Recent developments in the analysis of effective properties of inhomogeneous materials.
George Papanicolaou*, Courant Institute of Mathematical Sciences, New York University
(8806091)

9:40 a.m.
Correspondence between planar elasticity and twodimensional complex conductivity.
G. W. Milton*, Courant Institute of Mathematical Sciences, New York University
A. V. Cherkaev, University of Utah
A. B. Movchan, University of Bath, England
(8807377)

10:15 a.m.
On the stiffness of materials containing a disordered array of microscopic holes or hard inclusions.
Oscar P. Bruno*, Georgia Institiute of Technology
Perry H. Leo, University of Minnesota, Minneapolis
(8807349)

Friday April 9, 1993, 8:30 a.m.10:50 a.m.
Special Session on Commutative Algebra and Modules, I
Room 312, Union Building

8:30 a.m.
Polynomial maps and Zariski's main theorem.
Shreeram S. Abhyankar*, Purdue University, West Lafayette
(8801405)

9:00 a.m.
J. C., Maximal ideals and coincidences.
Eloise Hamann*, San Jose State University
(8801313)

9:30 a.m.
On the restriction of the Picard group of a normal quasiprojective variety to a hypersurface section.
S. D. Cutkosky*, University of Missouri, Columbia
(8801321)

10:00 a.m.
Local cohomological dimension of algebraic varieties in characteristic p > 0 is algorithmically computable.
Gennady Lyubeznik*, University of Minnesota, Minneapolis
(8801395)

10:30 a.m.
The ring of glued polynomials on the union of hyperplanes.
S. Yuzvinsky*, University of Oregon
C. O'Connor, Shawnee State University
(8801303)

Friday April 9, 1993, 8:30 a.m.10:50 a.m.
Special Session on Partial Differential Equations and Several Complex Variables, I
Den, Union Building

8:30 a.m.
Homotopy formulas in the tangential CauchyRiemann complex.
MeiChi Shaw*, University of Notre Dame
(8803226)

9:00 a.m.
Parametrices for a class of Schrodinger equations with variable coefficients.
Fran\c cois Treves*, Rutgers University, New Brunswick
(8803551)

9:30 a.m.
The Bergman projector of a convex domain.
Jeffery D. McNeal*, Princeton University
(8803288)

10:00 a.m.
Analytic hypoellipticity for the sum of squares of vector fields.
A. Alexandrou Himonas*, Institute for Advanced Study, Princeton University
(8803534)

10:30 a.m.
Mappings of nondegenerate locally polyhedral domains.
David E. Barrett*, University of Michigan, Ann Arbor
(8803269)

Friday April 9, 1993, 9:00 a.m.10:50 a.m.
Special Session on Singularities of Geometric Partial Differential Equations, I
Room 324, Union Building

9:00 a.m.
Energy minimizing mappings between singular spaces.
Jingyi Chen*, University of California, Irvine
(8805366)

9:30 a.m.
Blowup of heat flow of harmonic maps with a free boundary condition.
Yunmei Chen*, University of Florida
FangHua Lin, Courant Institute of Mathematical Sciences, New York University
(8803536)

10:00 a.m.
Moduli spaces for complete metrics of constant positive scalar curvature.
Rafe Mazzeo*, University of Washington and Stanford University
Dan Pollack, University of Texas, Austin
(8803578)

10:30 a.m.
Discussion

Friday April 9, 1993, 9:00 a.m.10:50 a.m.
Session on Contributed Papers
Room 319, Union Building

9:00 a.m.
Torsion of differentials of affine quasihomogeneous hypersurfaces.
Ruth Ingrid Michler*, University of California, Berkeley
(8801384)

9:20 a.m.
A dynamic contact problem in thermal viscoelasticity.
Kenneth Kuttler*, Michigan Technological University
Meir Shillor, Oakland University
(8803509)

9:40 a.m.
Line integrals of monotone operators.
Russell Bilyeu*, University of North Texas
(8804601)

10:00 a.m.
Unconditionally converging operators, Vsets, and vector measures.
Paul Lewis*, University of North Texas
(8804610)

10:20 a.m.
Variational principles for differential equations with symmetries and conservation laws.
Ian M. Anderson, Utah State University
Juha Pohjanpelto*, Oregon State University
(8804992)

10:40 a.m.
The center density of sphere packing in dimension zero.
C. Muses*, Mathematics & Morphology Research Center, Canada
(8805148)

Friday April 9, 1993, 11:00 a.m.11:50 a.m.
Invited Address
Primitive permutation groups and coverings of curves.
Main Ballroom, Union Building
Robert M. Guralnick*, University of Southern California
(8802004)

Friday April 9, 1993, 2:00 p.m.2:50 p.m.
Invited Address
Percolation problems in materials science.
Main Ballroom, Union Building
Kenneth Golden*, University of Utah
(8803550)

Friday April 9, 1993, 3:00 p.m.6:00 p.m.
Special Session on Hopf Algebras and Hopf Algebra Actions, II
Parlor A, Union Building

3:00 p.m.
Construction of quantum groups from BelavinDrinfeld infinitesimals.
Murray Gerstenhaber*, University of Pennsylvania
Anthony Giaquinto, University of Michigan, Ann Arbor
S. D. Schack, State University of New York, Buffalo
(8801646)

3:30 p.m.
Multiparameter quantum enveloping algebras.
William Chin, DePaul University
Jacob Towber, DePaul University
Richard Larson, University of Illinois, Chicago
Ian M. Musson*, University of Wisconsin, Milwaukee
(8801642)

4:00 p.m.
Nonstandard quantized enveloping algebras.
Anthony Giaquinto*, University of Michigan, Ann Arbor
(8801673)

4:30 p.m.
Prime spectra of skew polynomial rings.
Edward S. Letzter*, Texas A\thsp\&\thsp M University, College Station
(8801647)

5:00 p.m.
Hopf algebras of low dimension.
Warren D. Nichols*, Florida State University
Roselyn Williams, Florida A & M University
(8801687)

5:30 p.m.
Quantum groups and qdifference equations.
N. Reshetikhin*, University of California, Berkeley
(8801697)

Friday April 9, 1993, 3:00 p.m.5:00 p.m.
Special Session on Effective Properties of Inhomogeneous Materials, II
Collegiate, Union Building

3:00 p.m.
A comparison of methods for estimating the effective properties of nonlinear composites.
P. PonteCasta\~neda*, University of Pennsylvania
(8807337)

3:35 p.m.
Effective yield behavior of rigid/plastic composite materials.
Tamara Olson*, Brigham Young University
(8807335)

4:30 p.m.
Fine scale microstructure in Martensitic phase transformations.
Kaushik Bhattacharya*, Courant Institute of Mathematical Sciences, New York University
(8807353)

Friday April 9, 1993, 3:00 p.m.4:50 p.m.
Special Session on Singularities of Geometric Partial Differential Equations, II
Room 324, Union Building

3:00 p.m.
Compactness results for the singular Yamabe problem.
Daniel Pollack*, University of Texas, Austin
(8803580)

3:30 p.m.
Uniqueness in motion by mean curvature.
Tom Ilmanen*, University of Wisconsin, Madison
(8803582)

4:00 p.m.
Location of singularities of pharmonic maps.
Robert Hardt*, Rice University
(8803530)

4:30 p.m.
Local behavior of solutions of heat equations for harmonic maps from surfaces near singular points.
Jie Qing*, University of California, Los Angeles
(8805360)

Friday April 9, 1993, 3:00 p.m.5:50 p.m.
Special Session on Commutative Algebra and Modules, II
Room 312, Union Building

3:00 p.m.
On the fitting ideals in free resolutions.
HsinJu Wang*, Purdue University, West Lafayette
(8801327)

3:30 p.m.
Tensor products of modules over 1dimensional local rings.
Craig Huneke*, Purdue University, West Lafayette
Roger Wiegand, Purdue University, West Lafayette
(8801314)

4:00 p.m.
The asymptotic behavior of HilbertKunz functions and their generalizations.
ShouTe Chang*, University of Michigan, Ann Arbor
(8801344)

4:30 p.m.
Reduction numbers, Rees algebras, and Pfaffian ideals.
Sam Huckaba, Florida State University
Craig Huneke, Purdue University, West Lafayette
Ian M. Aberbach*, Purdue University, West Lafayette
(8801357)

5:00 p.m.
Higher structures on infinite resolutions.
Luchezar L. Avramov*, Purdue University, West Lafayette
Vesselin N. Gasharov, Brandeis University
Irena V. Peeva, Brandeis University
(8801372)

5:30 p.m.
Zero cycles and projective modules.
M. Pavaman Murthy*, University of Chicago
(8801393)

Friday April 9, 1993, 3:00 p.m.4:50 p.m.
Special Session on Partial Differential Equations and Several Complex Variables, II
Den, Union Building

3:00 p.m.
Discussion

3:30 p.m.
Global Mizohata operators.
Howard Jacobowitz*, Rutgers University, Camden
(8803512)

4:00 p.m.
Hyperfunction theory on hypoanalytic structures.
Paulo D. Cordaro*, Institute for Advanced Study, Princeton University
(8803533)

4:30 p.m.
Unique continuation and a Schwarz reflection principle for analytic sets.
M. S. Baouendi, University of California at San Diego, La Jolla
Linda P. Rothschild*, University of California at San Diego, La Jolla
(8803285)
Saturday April 10, 1993

Saturday April 10, 1993, 8:00 a.m.10:45 a.m.
Special Session on Effective Properties of Inhomogeneous Materials, III
Collegiate, Union Building

8:00 a.m.
Relaxation of nonselfadjoint problems of optimal design.
Konstantin Lurie*, Worcester Polytechnic Institute
(8804968)

8:35 a.m.
An approach to relation of optimal design problems.
A. V. Cherkaev*, University of Utah
(8804967)

9:40 a.m.
Bounds on the effective properties of composites: Translation method and its geometrical interpretation.
Leonid V. Gibiansky*, Courant Institute of Mathematical Sciences, New York University
(8807375)

10:15 a.m.
A set of materials which is stable under lamination.
Vincenzo Nesi*, University of L'Aquila, Italy
(8807376)

Saturday April 10, 1993, 8:30 a.m.10:50 a.m.
Special Session on Hopf Algebras and Hopf Algebra Actions, III
Parlor A, Union Building

8:30 a.m.
Hopf algebras dual to the multiparameter deformation of the coordinate ring of n by n matrices.
William Chin*, DePaul University and University of Southern California
(8801643)

9:00 a.m.
Crossed products of Hopf algebras.
M. Susan Montgomery*, University of Southern California
HansJurgen Schneider, University Munchen, Germany
(8801608)

9:30 a.m.
Chain conditions and Lie algebra actions.
Jeffrey Bergen*, DePaul University
(8801690)

10:00 a.m.
The Connes spectrum under ore extension.
James Osterburg*, University of Cincinnati
Xue Yao, University of Cincinnati
(8801616)

10:30 a.m.
Braided bialgebras.
Jack Towber*, De Paul University
(8801623)

Saturday April 10, 1993, 8:30 a.m.10:50 a.m.
Special Session on Commutative Algebra and Modules, III
Room 312, Union Building

8:30 a.m.
On the Canonical element conjecture.
S. P. Dutta*, University of Illinois, UrbanaChampaign
(8801302)

9:00 a.m.
Rings of invariants: The CohenMacaulay property and Frationality.
Donna Glassbrenner*, University of Virginia
(8801328)

9:30 a.m.
On the Hilbert function of determinantal rings.
J. Herzog*, Purdue University, West Lafayette and University of Essen, Germany
A. Conca, Purdue University, West Lafayette and University of Essen, Germany
(8801355)

10:00 a.m.
Tight closure and big CohenMacauley algebras.
Melvin Hochster*, University of Michigan, Ann Arbor
(8801324)

10:30 a.m.
On a certain class of algebraically independent elements.
William Heinzer, Purdue University, West Lafayette
Christel Rotthaus*, Michigan State University
Judith D. Sally, Northwestern University
(8801329)

Saturday April 10, 1993, 8:30 a.m.10:50 a.m.
Special Session on Partial Differential Equations and Several Complex Variables, III
Den, Union Building

8:30 a.m.
Infinitesimal CR automorphisms of rigid hypersurfaces.
Nancy K. Stanton*, University of Notre Dame
(8803232)

9:00 a.m.
Global regularity on pseudo convex domains.
Joseph J. Kohn*, Princeton University
(8803539)

9:30 a.m.
Topological encoding of the symbol of transversally elliptic operators.
Gerardo A. Mendoza*, Temple University
(8803563)

10:00 a.m.
Problems in extending analytic varieties.
Yeren Xu*, Temple University, Philadelphia
(8803252)

10:30 a.m.
First integrals for compact involutive structures.
Nicholas Hanges*, Herbert H. Lehman College, City University of New York
(8803518)

Saturday April 10, 1993, 9:00 a.m.10:50 a.m.
Special Session on Singularities of Geometric Partial Differential Equations, III
Room 324, Union Building

9:00 a.m.
Conformally invariant energy functionals.
Libin Mou, University of California, Los Angeles
Paul Yang*, University of California, Los Angeles
(8803579)

9:30 a.m.
Discussion

10:00 a.m.
Functions whose graphs are Lipschitz manifolds.
Tatiana Toro*, Institute for Advanced Study, Princeton University
(8802865)

10:30 a.m.
Harmonic functions and the structure of complete manifolds.
Peter Li, University of California, Irvine
LuenFai Tam*, University of California, Irvine
(8805394)

Saturday April 10, 1993, 9:30 a.m.10:50 a.m.
Special Session on Stochastic Processes in Population Genetics, I
Room 323A, Union Building

9:30 a.m.
Neutral allelic genealogy.
S. N. Ethier*, University of Utah
Tokuzo Shiga, Tokyo Institue of Technology, Japan
(8809270)

10:00 a.m.
Parameter estimation for multiclass selection models.
Paul Joyce*, University of Idaho
Simon Tavare, University of Southern California
(8806020)

10:30 a.m.
Approximations of population genetic models as measurevalued processes.
Ming He*, University of Utah
(8806071)

Saturday April 10, 1993, 11:00 a.m.11:50 a.m.
Invited Address
Sequence comparisons in molecular biology.
Main Ballroom, Union Building
Michael S. Waterman*, University of Southern California
(8809240)

Saturday April 10, 1993, 2:00 p.m.2:50 p.m.
Invited Address
Analytic hypoellipticity, nonlinear eigenvalues, and nilpotent group representations.
Main Ballroom, Union Building
Michael Christ*, University of California, Los Angeles
(8803545)

Saturday April 10, 1993, 3:00 p.m.5:45 p.m.
Special Session on Effective Properties of Inhomogeneous Materials, IV
Collegiate, Union Building

3:00 p.m.
Homogenization of multiscaled media.
Serguei Kozlov*, University of Provence, Marseilles, France
(8803541)

3:35 p.m.
A "streched checkerboard" model of an orthotropic elastic composite of two vastly different materials.
Leonid Berlyand*, Pennsylvania State University, University Park
Oleg Gendelman, Russian Academy of Sciences, Moscow
(8803556)

4:40 p.m.
Conductance fluctuations in random media.
Jan Wehr*, University of Arizona
(8808289)

5:15 p.m.
Convection enhanced diffusion.
Albert Fannjiang*, University of California, Los Angeles
George Papanicolaou, Courant Institute of Mathematical Sciences, New York University
(8807659)

Saturday April 10, 1993, 3:00 p.m.4:50 p.m.
Special Session on Singularities of Geometric Partial Differential Equations, IV
Room 324, Union Building

3:00 p.m.
Curvature and singularity.
S. Walter Wei*, University of Oklahoma
(8805317)

3:30 p.m.
Classification of the solutions of a singular elliptic P.D.E.
Wenxiong Chen*, Southwest Missouri State University
Congming Li, University of Colorado, Boulder
(8803561)

4:00 p.m.
Discussion

Saturday April 10, 1993, 3:00 p.m.4:20 p.m.
Special Session on Stochastic Processes in Population Genetics, II
Room 323A, Union Building

3:00 p.m.
Inference for the coalescent.
R. C. Griffiths, Monash University, Australia
S. Tavar\'e*, University of Southern California
(8806007)

3:30 p.m.
A relation between FlemingViot processes and measurevalued branching diffusions.
Stephen Krone*, University of Utah
S. N. Ethier, University of Utah
(8806062)

4:00 p.m.
The coalescent, ladder models and hypervariable loci.
P. Donnelly*, Queen Mary & Westfield College, England
A. Roe, Queen Mary & Westfield College, England
(8806011)

Saturday April 10, 1993, 3:00 p.m.5:50 p.m.
Special Session on Commutative Algebra and Modules, IV
Room 312, Union Building

3:00 p.m.
Reflexive modules over normal domains.
Frank Demeyer*, Colorado State University
Kim Regnier, Colorado State University
(8801322)

3:30 p.m.
Local duality for Matlis reflexive modules.
Richard Belshoff, Southwest Missouri State University
Cameron Wickham*, Southwest Missouri State University
(8801364)

4:00 p.m.
Characterization of completions of unique factorization domains.
Raymond C. Heitmann*, University of Texas, Austin
(8801331)

4:30 p.m.
KrullSchmidt theorems in dimension 1.
Lawrence S. Levy*, University of Wisconsin, Madison
Charles J. Odenthal, University of Toledo
(8801654)

5:00 p.m.
On weak liftings of modules.
Songqing Ding*, Texas Tech University
(8801338)

5:30 p.m.
Noncommutative algebra and algebraic geometry.
Alexander Rosenberg*, University of Utah
(8801383)

Saturday April 10, 1993, 3:00 p.m.4:50 p.m.
Special Session on Partial Differential Equations and Several Complex Variables, IV
Den, Union Building

3:00 p.m.
Loop spaces as complex manifolds.
L\'aszl\'o Lempert*, Purdue University, West Lafayette
(8803219)

3:30 p.m.
Degrees for proper holomorphic mappings between balls.
John P. D'Angelo*, University of Illinois, UrbanaChampaign
(8803225)

4:00 p.m.
Global analyticity for square_b on three dimensional CR manifolds.
David S. Tartakoff*, University of Illinois, Chicago
Makhlouf Derridj, University of ParisSud, France
(8803296)

4:30 p.m.
Geometry of analytic discs attached to real submanifolds of complex space.
M. S. Baouendi*, University of California at San Diego, La Jolla
(8803286)
Inquiries: meet@ams.org