
AMS Sectional Meeting Program by Day
Current as of Tuesday, April 12, 2005 15:08:51
Program 
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Inquiries: meet@ams.org
1991 Eastern Section Meeting
Philadelphia, PA, October 1213, 1991
Meeting #868
Associate secretaries: W Wistar Comfort, AMS wcomfort@wesleyan.edu
Sunday October 13, 1991

Sunday October 13, 1991, 7:30 a.m.9:50 a.m.
Special Session on Modular Forms, Arithmetic Algebraic Geometry, III

7:30 a.m.
Galois module structure of schemes and modular forms.
Ted Chinburg*, University of Pennsylvania
(8681195)

8:00 a.m.
Torsion points on some Jacobians of modular curves.
Dino J. Lorenzini*, Duke University
(8681193)

8:30 a.m.
pAdic complex power and BernsteinSato polynominal.
XiaoWei Zhu*, University of Oklahoma
(86811166)

9:00 a.m.
Variation of the canonical height in algebraic families.
Joseph Silverman*, Brown University
(8681129)

9:30 a.m.
Informal Discussion

Sunday October 13, 1991, 7:30 a.m.9:50 a.m.
Special Session on Surgery Theory and Singular Spaces, III

7:30 a.m.
Noncharacteristic embeddings of Tori.
David Miller*, Swarthmore College
(8685761)

8:00 a.m.
Positive scalar curvature for closed manifolds with finite fundamental group.
Jonathan Rosenberg*, University of Maryland, College Park
(86853158)

8:30 a.m.
Characteristics class and singular spaces.
Sylvain Cappell*, Courant Institute of Mathematical Sciences, New York University
(86857176)

9:00 a.m.
Atiyah invariant of Kahler manifolds and Picard variety.
A. Libgober*, University of Illinois, Chicago
(86857126)

9:30 a.m.
Torsion and the Ktheory of Von Neumann algebras.
Mel Rothenberg*, University of Chicago
(8685787)

Sunday October 13, 1991, 7:30 a.m.9:50 a.m.
Special Session on Geometric Analysis, III

7:30 a.m.
The flat horocycle transform on a symmetric space.
Sigurdur Helgason*, Massachusetts Institute of Technology
(8684323)

8:00 a.m.
The infinitesimal rigidity of the complex quadric of dimension four.
Hubert Goldschmidt*, Columbia University
(8685324)

8:30 a.m.
Range characterizations of totally geodesic Radon transforms on compact symmetric spaces.
Fulton Gonzalez*, Tufts University
(8684486)

9:00 a.m.
Radon transforms and structure of compact symmetric spaces.
Eric Grinberg*, Temple University, Philadelphia
(86844149)

9:30 a.m.
Real analytic Radon transforms and Pompeiu problems.
Eric Todd Quinto*, Tufts University
(8684490)

Sunday October 13, 1991, 7:30 a.m.9:55 a.m.
Special Session on Variational Problems in Low Dimensional Geometry, III

7:30 a.m.
Poincare's geodesics, soap bubbles, and constantcurvature curves.
Frank Morgan*, Williams College
(86853113)

8:10 a.m.
What is (weighted) mean curvature?
Jean Taylor*, Rutgers University, New Brunswick
(8684937)

8:45 a.m.
Computing optimal geometries.
Fred Almgren*, Princeton University
(8684931)

9:25 a.m.
Proving areaminimization by slicing.
Gary R. Lawlor*, Brigham Young University
(8684942)

Sunday October 13, 1991, 7:30 a.m.9:50 a.m.
Special Session on Phase Transitions and/or Front Propagation, III

7:30 a.m.
Generalized mean curvature motion.
L. C. Evans*, University of California, Berkeley
J. Spruck, University of Massachusetts, Amherst
(8683574)

8:00 a.m.
Front propogation for reaction diffusion equations.
G. Barles*, University de Tours, France
H. M. Soner, Carnegie Mellon University
P. E. Souganidis, Brown University
(8683533)

8:30 a.m.
Curvaturedependent front propagation with boundary conditions.
Peter Sternberg*, Indiana University, Bloomington
(8683573)

9:00 a.m.
Convergence of AllenCahn equation.
H. Mete Soner*, Carnegie Mellon University
(8683581)

9:30 a.m.
Models of flame propagation and crystal growth: A differential games approach.
Pierpaolo Soravia*, Brown University
(86835163)

Sunday October 13, 1991, 7:30 a.m.9:50 a.m.
Special Session on Numerical Linear Algebra, III

7:30 a.m.
A direct method for solving unstructed sparse linear systems.
Carl D. Meyer*, North Carolina State University
(8686522)

8:00 a.m.
A new implementation of th GMRES method.
Lothar Reichel*, University of Kentucky
Z. Bai, University of Kentucky
D. Hu, University of Kentucky
(8686508)

8:30 a.m.
Asynchronous parallel iterations for solving nonlinear systems.
L. Elsner, University of Bielefeld, Germany
I. Koltracht, University of Connecticut, Storrs
M. Neumann*, University of Connecticut, Storrs
(8686535)

9:00 a.m.
SOR for Markov chain problems.
William J. Stewart*, North Carolina State University
(8686599)

9:30 a.m.
Convergent iterative methods to find stationary distributions of Markov processes.
Ivo Marek*, University Karlovy, Czechoslovakia
Daniel B. Szyld, Temple University, Philadelphia
(8686526)

Sunday October 13, 1991, 8:00 a.m.9:50 a.m.
Special Session on Recent Progress in Ricci Curvature and Related Topics,III

8:00 a.m.
Diffeomorphism finiteness for a certain class of Riemannian manifolds.
Jeff Cheeger*, Courant Institute of Mathematical Sciences, New York University
(8685372)

8:40 a.m.
Volume comparison under scaling invariant Ricci bound.
Guojun G. Liao*, University of Texas, Arlington
Jianzhong Su, University of Texas, Arlington
(8685351)

9:20 a.m.
Bounds on the fundamental group of a manifold with almost nonnegative Ricci curvature.
Steve Rosenberg, Boston University
Deane Yang*, Polytechnic Institute of New York
(86853103)

Sunday October 13, 1991, 8:00 a.m.9:50 a.m.
Special Session on Extreme Value Theory, III

8:00 a.m.
Improved asymtotics for tail density estimation.
James Pickands, III*, University of Pennsylvania
(86862152)

8:30 a.m.
A flaw model with random intensity.
Howard M. Taylor*, University of Delaware
(86860118)

9:00 a.m.
Practical application of newer methods of tail estimation to wind engineering: A case study.
James A. Lechner, National Institute of Standards and Technology, Maryland
Stefan D. Leigh*, National Institute of Standards and Technology, Maryland
Emil Simiu, National Institute of Standards and Technology, Maryland
(86862112)

9:30 a.m.
Extreme values in stochastic epidemic processes.
Grace L. Yang*, University of Maryland, College Park
(86860130)

Sunday October 13, 1991, 8:00 a.m.9:40 a.m.
Special Session on Applications of Microlocal Analysis to Partial Differential Equations, III

8:00 a.m.
Analytic hypoellipticity of the Kohn Laplacian plus a constant.
Daryl Geller*, State University of New York, Stony Brook
(8683584)

8:35 a.m.
Boundedness of the FBI transform on Sobolev spaces and propagation of singularities.
S. Berhanu, Temple University, Philadelphia
S. Chanillo*, Rutgers University, New Brunswick
(86835117)

9:10 a.m.
Wedge extendability for hypoanalytic structures.
Mark E. Marson*, Purdue University, West Lafayette
(86835171)

Sunday October 13, 1991, 8:00 a.m.9:50 a.m.
Special Session on Rings and Representations, III

8:00 a.m.
Quotients of crossed products of Hopf algebras.
J. Bergen, DePaul University
M. Susan Montgomery*, University of Southern California
(86816154)

8:30 a.m.
Delta methods in enveloping rings. II.
Jeffrey Bergen*, DePaul University
D. S. Passman, University of Wisconsin, Madison
(8681627)

9:00 a.m.
Cocommutative Hopf algebra actions and the Connes spectrum.
James Osterburg, University of Cincinnati
Declan Quinn*, Syracuse University
(86816155)

9:30 a.m.
Artinian rings with linearly ordered twosided ideals.
Barbara L. Osofsky*, Rutgers University, New Brunswick
Richard D. Resco, University of Oklahoma
(8681694)

Sunday October 13, 1991, 8:00 a.m.9:50 a.m.
Special Session on Tilings, III

8:00 a.m.
Penrose tilings, crystals and dynamical systems.
Charles Radin*, University of Texas, Austin
(8684739)

8:30 a.m.
Tilings, orbifolds, and symmetry.
John H. Conway*, Princeton University
(86851105)

9:00 a.m.
An elementary proof of two triangletiling theorems of Conway and Lagarias.
Donald C. West*, State University of New York, College at Plattsburgh
(8680560)

9:30 a.m.
Classification of selfdual tilings.
Walter Stromquist*, Daniel H. Wagner Associates, Paoli, Pennsylvania
(8685168)

Sunday October 13, 1991, 8:30 a.m.9:50 a.m.
Special Session on Nonlinear Partial Differential Equations, I

8:30 a.m.
Solvability of a fourth order equation in conformal geometry.
SunYung Alice Chang*, University of California, Los Angeles
Paul C. Yang, University of Southern California
(8685312)

9:00 a.m.
On uniformly rotating stars.
Yanyan Li*, Rutgers University, New Brunswick
(8683516)

9:30 a.m.
PoincareBendixson theory for state dependent differentialdelay equations.
John MalletParet, Brown University
Roger D. Nussbaum*, Rutgers University, New Brunswick
(8683518)

Sunday October 13, 1991, 10:00 a.m.11:00 a.m.
Invited Address
Tilings, quasicrystals, and Hilbert's 18th problem.
ROOM 501, Temple University Center City, 1619 Walnut Street
Marjorie Senechal*, Smith College
(86852102)

Sunday October 13, 1991, 12:30 p.m.1:30 p.m.
Invited Address
Critical points at infinity in some variational problems.
ROOM 501, Temple University Center City, 1619 Walnut Street
Abbas Bahri*, Rutgers University, New Brunswick
(8683521)

Sunday October 13, 1991, 1:45 p.m.2:55 p.m.
Special Session on Recent Progress in Ricci Curvature and Related Topics,IV

1:45 p.m.
Manifolds of negatively pinched curvature.
Rugang Ye*, University of California, Santa Barbara
(86853186)

2:25 p.m.
Fredholm operators and Einstein metrics on conformally compact manifolds.
John M. Lee*, University of Washington
(86853164)

Sunday October 13, 1991, 1:45 p.m.4:05 p.m.
Special Session on Modular Forms, Arithmetic Algebraic Geometry, IV

1:45 p.m.
Zeta functions of flag varieties and Einstein series for Gl_n.
David J. Wright*, Oklahoma State University, Stillwater
(86811169)

2:15 p.m.
Eisenstein series with explicit expansions.
Paul Feit*, Hamden, Connecticut
(8681148)

2:45 p.m.
Universal local zeta functions.
Diane Meuser*, Boston University
(8681164)

3:15 p.m.
Bernoulli congruences between periods of modular forms.
G. S. Nelson*, Pennsylvania State University, Erie
(8681128)

3:45 p.m.
Informal Discusison

Sunday October 13, 1991, 1:45 p.m.3:35 p.m.
Special Session on Surgery Theory and Singular Spaces, IV

1:45 p.m.
Links and localised Blanchfield pairings.
Kent Orr*, Indiana University, Bloomington
(86857167)

2:15 p.m.
Gsurgery up to topological simple homotopy.
Mark Steinberger*, State University of New York, Albany
Frank Connolly, University of Notre Dame
(86857178)

2:45 p.m.
The equivariant Borel conjecture fails.
Shmuel Weinberger*, University of Chicago
(86857170)

3:15 p.m.
Periodicity in stable equivariant surgery.
Min Yan*, University of Michigan, Ann Arbor
(86857134)

Sunday October 13, 1991, 1:45 p.m.3:35 p.m.
Special Session on Geometric Analysis, IV

1:45 p.m.
Asymptotic finite propagation speed for heat diffusion on certain Riemannian manifolds.
JeanPhilippe Anker, Universite de Nancy I, France
Alberto G. Setti*, Cornell University
(8685841)

2:15 p.m.
Some direct and inverse problems arising in design of reflecting surfaces.
Vladimir Oliker*, Emory University
(8685340)

2:45 p.m.
Nonlinear Fourier analysis.
Leon Ehrenpreis*, Temple University, Philadelphia
(86844148)

3:15 p.m.
On stability estimates in the 'hole theorem'for the Radon transform.
Peter Kuchment*, Wichita State University
Ziqi Sun, Wichita State University
(86844172)

Sunday October 13, 1991, 1:45 p.m.3:35 p.m.
Special Session on Variational Problems in Low Dimensional Geometry, IV

1:45 p.m.
Projective minimal surfaces.
Lucas Hsu*, Mathematical Sciences Research Institute, Berkeley
(86858177)

2:25 p.m.
Variational properties of holomorphic Abelian differentials on Riemann surfaces.
Lev Slutskin*, Yeshiva University
(8683056)

3:05 p.m.
Isoperimetric regions in some product manifolds.
Jesus Gonzalo*, Universidad Autonoma de Madrid, Spain
(8685398)

Sunday October 13, 1991, 1:45 p.m.3:05 p.m.
Special Session on Tilings, IV

1:45 p.m.
Some results on semiregular tessellations of the hyperbolic plane.
Douglas J. Dunham*, University of Minnesota, Duluth
(86852146)

2:15 p.m.
Balance of tilings in the hyperbolic plane.
Judith Flagg Moran*, Trinity College
(86805100)

2:45 p.m.
Cube tilings, graphs, and simulation.
S\'andor Szab\'o*, University of the Pacific
(86851120)

Sunday October 13, 1991, 1:45 p.m.3:05 a.m.
Special Session on Phase Transitions and/or Front Propagation, IV

1:45 p.m.
Singular limits of phase field equations: Stefantype models, and motion by mean curvature.
G. Caginalp*, University of Pittsburgh
(8683559)

2:15 p.m.
Generation and propagation of interfaces for reactiondiffusion equations and systems.
Xinfu Chen*, University of Minnesota, Minneapolis
(8683511)

2:45 p.m.
Delayed oscillation phenomena.
Jianzhong Su*, University of Texas, Arlington
(8683549)

Sunday October 13, 1991, 1:45 p.m.3:05 p.m.
Special Session on Numerical Linear Algebra, IV

1:45 p.m.
Modifying the ShougenShuquin algorithm for the banded symmetric generalized matrix eigenvalue problem.
Linda Kaufman*, AT&T Bell Laboratories, Murray Hill, New Jersey
(8686513)

2:15 p.m.
Parallel solution of generalized band symmetric eigenvalue problems by sectioning.
Ricardo D. Pantazis*, Duke University
(86865111)

2:45 p.m.
Error analysis of update methods for the symmetric eigenvalue problem.
Jesse L. Barlow*, Pennsylvania State University, University Park
(8686502)

Sunday October 13, 1991, 1:45 p.m.3:05 p.m.
Special Session on Nonlinear Partial Differential Equations, II

1:45 p.m.
Multivortices in the electroweak theory.
Yisong Yang*, University of New Mexico
(8683547)

2:15 p.m.
Positive solutions of semilinear elliptic equationcap delta u + hu_n2/n+2 = 0.
Tiancheng Ouyang*, University of Cincinnati
(86835141)

2:45 p.m.
Generalized unique continuation theorems.
Libin Mou*, University of Southern California
(86835179)
Inquiries: meet@ams.org

