AMS Sectional Meeting Full Program
Current as of Tuesday, April 12, 2005 15:08:45
1990 Western Section Meeting
Irvine, CA, November 1011, 1990
Meeting #862
Associate secretaries: Lance W Small, AMS lwsmall@ucsd.edu
Saturday November 10, 1990

Saturday November 10, 1990, 7:00 a.m.9:50 a.m.
Special Session on Interactions Between Group Theory and Geometry/Number Theory, I
Room 108, Physical Sciences I

7:00 a.m.
pAlgebras over maximally complete fields.
Bill Jacob*, University of California, Santa Barbara
(8621622) 
7:30 a.m.
Kadmissibility of A_6 and A_7.
Murray Schacher*, University of California, Los Angeles
(8621223) 
8:00 a.m.
Maximal subfields of division algebras over rational function fields.
Burton Fein*, Oregon State University
(8621219) 
8:30 a.m.
The genus zero problem for M_24.
Geoffrey Mason*, University of California, Santa Cruz
(8622034) 
9:00 a.m.
On multiplication by n in the Jacobians of hyperelliptic curves.
David G. Cantor*, University of California, Los Angeles
(8622049) 
9:30 a.m.
Solvable algebras and weight vectors for group geometries.
Stephen D. Smith*, University of Illinois, Chicago
(8622025)

7:00 a.m.

Saturday November 10, 1990, 7:00 a.m.9:50 a.m.
Special Session on Operator Theory/Operator Algebras, I
Room 114, Physical Sciences I

7:00 a.m.
A Hankel matrix approach to truncated moment problems.
Raul E. Curto*, University of Iowa
(8624757) 
7:30 a.m.
Function algebras on Riemann surfaces and their representations: Induction and dilation.
Palle E. T. J\o rgensen*, University of Iowa
(8624689) 
8:00 a.m.
Mideals and quotients of subdiagonal algebras.
Yiu Tung Poon, Iowa State University
ZhongJin Ruan*, University of Illinois, UrbanaChampaign
(8624755) 
8:30 a.m.
The structure of twisted SU(3) groups.
Albert JeuLiang Sheu*, University of Kansas
(8624627) 
9:00 a.m.
Properties of the Haagerup tensor product.
Roger R. Smith*, Texas A\thsp\&\thsp M University, College Station
(8624601) 
9:30 a.m.
A Riesz decomposition property and its consequences.
Shuang Zhang*, University of Cincinnati
(8624606)

7:00 a.m.

Saturday November 10, 1990, 7:30 a.m.9:50 a.m.
Special Session on Probability Theory in Mathematical Physics, I
Room 230, Physical Sciences Classroom Facility

7:30 a.m.
Forest fires with regrowth in D = 2.
C. Neuhauser*, University of Southern California
R. Durrett, Cornell University
(8626044) 
8:00 a.m.
Hydrodynamics for totally asymmetric attractive particle system with general initial profiles.
JeanPierre Fouque*, University of California, Irvine
(8626040) 
8:30 a.m.
Mathematical models of catalytic surfaces.
Eric Grannan*, AT&T Bell Laboratories, Murray Hill, New Jersey
Glen Swindle, University of California, Santa Barbara
(8626041) 
9:00 a.m.
The contact process in a random environment.
Thomas M. Liggett*, University of California, Los Angeles
(8626047) 
9:30 a.m.
Droplet model for autocorrelation functions in an Ising ferromagnet.
C. Tang*, University of California, Santa Barbara
H. Nakanishi, University of California, Santa Barbara
J. S. Langer, University of California, Santa Barbara
(8626043)

7:30 a.m.

Saturday November 10, 1990, 8:00 a.m.9:50 a.m.
Special Session on Interactions Between Group Theory and Logic, I
Room 210, Physical Sciences Classroom Facility

8:00 a.m.
On a class of abelian pgroups.
Manfred Dugas*, Baylor University
John Irwin, Wayne State University
(8622070) 
8:30 a.m.
Infinite rank Butler groups, III.
K. M. Rangaswamy*, University of Colorado, Colorado Springs
(8622010) 
9:00 a.m.
A class of groups characterized by their socles.
Patrick Keef*, Whitman College
(8622083) 
9:30 a.m.
Superstable differential fields.
\v Zeljko Sokolovi\'c*, University of Notre Dame
(8620374)

8:00 a.m.

Saturday November 10, 1990, 8:00 a.m.9:50 a.m.
Special Session on Geometric P.D.E.'s: Mean and Scalar Curvature Problems, I
Room 158, Physical Sciences I

8:00 a.m.
Harmonic maps on noncompact manifolds.
Peter Li, University of Arizona
LuenFai Tam*, University of California, Irvine
(8625352) 
8:40 a.m.
Mean curvature evolution and front movement for the bistable equation.
L. C. Evans*, University of California, Berkeley
(8623586) 
9:20 a.m.
Curvaturedependent motion of curves and surfaces.
J. A. Sethian*, University of California, Berkeley
(8623533)

8:00 a.m.

Saturday November 10, 1990, 10:00 a.m.10:50 a.m.
Invited Address
Parameter spaces in the inverse Galois problem.
0, Physical Sciences Lecture Hall
Michael D. Fried*, University of California, Irvine
(8621212) 
Saturday November 10, 1990, 1:00 p.m.3:30 p.m.
Special Session on Interactions Between Group Theory and Logic, II
Room 210, Physical Sciences Classroom Facility

1:00 p.m.
Involutions in groups of finite Morley rank.
Alexandre Borovik*, Omsk University, USSR and University of California, Irvine
(8622009) 
1:30 p.m.
Model theory of Lie algebras.
Richard Rosengarden*, Rutgers University, New Brunswick
(8620377) 
2:00 p.m.
The cohomological dimension of locally finite groups.
Peter Kropholler, Queen Mary College, England
Simon Thomas*, Rutgers University, New Brunswick
(8622096) 
2:30 p.m.
Arities of finite permutation groups.
Gary A. Martin*, Southeastern Massachusetts University
Gregory Cherlin, Rutgers University, New Brunswick
(8622059) 
3:00 p.m.
Discussion

1:00 p.m.

Saturday November 10, 1990, 1:00 p.m.2:20 p.m.
Special Session on Interactions Between Group Theory and Geometry/Number Theory, II
Room 108, Physical Sciences I

1:00 p.m.
Fixedpoint ratios for finite groups.
Michael Aschbacher*, California Institute of Technology
(8622060) 
1:30 p.m.
Extensions of simple modules for SL_3(2^n), SU_3(2^n), Sp_4(2^n) and Sz(2^m).
Peter Sin*, University of Florida
(8622048) 
2:00 p.m.
Some examples of infinite Frobenius groups.
Michael J. Collins*, California Institute of Technology
(8622030)

1:00 p.m.

Saturday November 10, 1990, 1:00 p.m.4:00 p.m.
Special Session on Quantum and Statistical Mechanics, I
Room 230, Physical Sciences Classroom Facility

1:00 p.m.
Droplet shape, droplet condensation and large deviation estimates.
Senya Shlosman*, Academy of Science of the USSR
(8628266) 
1:30 p.m.
Effects of static disorder in statistical mechanics.
Jan Wehr*, Institute for Advanced Study
(8628268) 
2:00 p.m.
One dimensional Anderson models in the weak disorder limit.
Athanasios Speis*, University of Michigan
(8628167) 
2:30 p.m.
OrsteinZernike decay in the ground state of the Ising model in a strong transverse field.
Tom Kennedy*, University of Arizona
(8628273) 
3:00 p.m.
Quantum spin systems with disorder.
Abel Klein*, University of California, Irvine
(8628263) 
3:30 p.m.
Discussion

1:00 p.m.

Saturday November 10, 1990, 1:00 p.m.4:50 p.m.
Special Session on Operator Theory/Operator Algebras, II
Room 114, Physical Sciences I

1:00 p.m.
Facial structure in operator algebra theory.
Charles A. Akemann*, University of California, Santa Barbara
Gert K. Pedersen, Matematisk Institut, Denmark
(8624605) 
1:30 p.m.
Algebras associated with sets of semigroups of isometries.
William Arveson*, University of California, Berkeley
(8624691) 
2:00 p.m.
Projective tensor products for operator spaces and noncommutative coactions.
Edward Effros*, University of California, Los Angeles
ZhongJin Ruan, University of Illinois, UrbanaChampaign
(8624693) 
2:30 p.m.
A dense set of operators with tiny commutants.
Domingo A. Herrero*, Arizona State University
(8624703) 
3:00 p.m.
The derived tower of certain type III_lambda inclusions of index 4.
Phan H. Loi*, University of California, Los Angeles
(8624604) 
3:30 p.m.
C^*algebras generated by the elements of a unitary matrix.
Kevin P. McClanahan*, University of California, Los Angeles
(8624690) 
4:00 p.m.
Almost multiplicative maps between operator algebras.
Barry E. Johnson*, University of Newcastle Upon Tyne, England
(8624687) 
4:30 p.m.
Cohomology for operator algebras.
Frank L. Gilfeather*, University of New Mexico
(86247100)

1:00 p.m.

Saturday November 10, 1990, 1:00 p.m.3:30 p.m.
Special Session on Geometric P.D.E.'s: Mean and Scalar Curvature Problems, II
Room 158, Physical Sciences I

1:00 p.m.
Recent results on scalar curvature.
R. Schoen*, Stanford University
(8625350) 
1:40 p.m.
Higher order conformal invariants on S^n.
SunYung A. Chang*, University of California, Los Angeles
(8625385) 
2:20 p.m.
The singular Yamabe problem on the sphere.
Rafe Mazzeo*, Stanford University
Nat Smale, University of Utah
(8625351) 
3:00 p.m.
Gaussian curvature on S^2rotationally symmetric case.
Xingwang Xu*, University of California, Los Angeles
(8625381)

1:00 p.m.

Saturday November 10, 1990, 2:30 p.m.5:20 p.m.
Special Session on Moduli Space Applications, I
Room 108, Physical Sciences I

2:30 p.m.
Extensions of number fields arising from branched coverings.
Sybilla Beckmann*, University of Georgia
(8621417) 
3:00 p.m.
Universal CayleyHamilton algebras.
Zinovy Reichstein*, Mathematical Sciences Research Institute, Berkeley
(86214101) 
3:30 p.m.
Canonical bundle and deformations.
Ziv Ran*, University of California, Riverside
(8621435) 
4:00 p.m.
Vanishing theorems and the equations defining projective varieties.
Robert Lazarsfeld*, University of California, Los Angeles
(8621428) 
4:30 p.m.
Curves as Hurwitz spaces.
David Harbater*, University of Pennsylvania
(8621415) 
5:00 p.m.
Singular hyperbolic structures.
Steve Kerckhoff*, Stanford University
(8625816)

2:30 p.m.
Sunday November 11, 1990

Sunday November 11, 1990, 7:00 a.m.9:50 a.m.
Special Session on Interactions Between Group Theory and Geometry/Number Theory, III
Room 108, Physical Sciences I

7:00 a.m.
Planar difference sets and multipliers.
Chat Y. Ho*, University of Florida
(8622053) 
7:30 a.m.
On monodromy groups of fixed genus.
Michael G. Neubauer*, University of Texas, Austin
(8622056) 
8:00 a.m.
Central extensions as Galois groups.
H. V\"olklein*, University of Florida
(8621121) 
8:30 a.m.
Disconnected groups of Lie type as Galois groups.
Gunter Malle*, IWR, Federal Republic of Germany
(8622020) 
9:00 a.m.
Algebraic fundamental groups.
Shreeram S. Abhyankar*, Purdue University, West Lafayette
(8621418) 
9:30 a.m.
Kloosterman sums for Chevalley groups.
Romuald D\c abrowski*, Indiana University, Bloomington
(8622024)

7:00 a.m.

Sunday November 11, 1990, 7:00 a.m.9:50 a.m.
Special Session on Operator Theory/Operator Algebras, III
Room 114, Physical Sciences I

7:00 a.m.
Surjective isometries of real C^*algebras.
ChoHo Chu, University of London, England
Truong Dang*, Irvine, CA
Bernard Russo, University of California, Irvine
Belisario Ventura, California State University, San Bernardino
(8624692) 
7:30 a.m.
How many exponentials?
N. Christopher Phillips*, University of Oregon
(8624602) 
8:00 a.m.
Analyticity in triangular UHF algebras.
Baruch Solel, University of Haifa, Israel
Belisario A. Ventura*, California State University, San Bernardino
(8624688) 
8:30 a.m.
Triangular AF algebras.
Alan Hopenwasser*, University of Alabama, Tuscaloosa
(8624708) 
9:00 a.m.
Duality and harmonic analysis for groups, hypergroups, and groupoids.
Martin E. Walter*, University of Colorado, Boulder
(8624397) 
9:30 a.m.
Geometric characterization of B(H,K).
Yaakov Friedman, Jerusalem College of Technology, Israel
Bernard Russo*, University of California, Irvine
(8624694)

7:00 a.m.

Sunday November 11, 1990, 7:00 a.m.9:50 a.m.
General Session
Room 240, Physical Sciences I

7:00 a.m.
Generalized integral Iwasawa and BruhatSteinberg decompositions for semisimple groups.
Yevsey Nisnevich*, Johns Hopkins University
(8621158) 
7:20 a.m.
On differential algebraic groups.
Anand Pillay, University of Notre Dame
\v Zeljko Sokolovi\'c*, University of Notre Dame
(8620362) 
7:40 a.m.
Certain ToddCoxeter approximations and universal covers of 3manifolds.
John R. Stallings*, University of California, Berkeley
(8622011) 
8:00 a.m.
Counting subgroups of given index and orbit structure in free groups.
Reinhard O. W. Franz*, University of Bielefeld, Federal Republic of Germany
(8622079) 
8:20 a.m.
Generalized translational spaces.
C. R. Giardina*, City College, City University of New York
(8629469) 
8:40 a.m.
Conditioning infinitely monotone capacities.
Carl G. Wagner*, University of Tennessee, Knoxville
(8626007) 
9:00 a.m.
Transient solutions of the M/M/1 queueing system using Taylor series.
Alan Krinik*, California Polytechnic State University
(8626054) 
9:20 a.m.
A fdistance property of dsymbol aperiodic sequences arising from a cutandproject method.
Ramin Vakilian*, University of California, Davis
(8628271) 
9:40 a.m.
Information, complexity and meaning
Ben Goertzel*, University of Nevada, Las Vegas
(8626895)

7:00 a.m.

Sunday November 11, 1990, 7:30 a.m.9:50 a.m.
Special Session on Geometric P.D.E.'s: Mean and Scalar Curvature Problems, III
Room 158, Physical Sciences I

7:30 a.m.
Discussion 
8:00 a.m.
Minimal submanifolds with isolated singularities.
N. Smale*, University of Utah
(8623580) 
8:40 a.m.
Conformal deformation of metrics to constant mean curvature.
Jos\'e F. Escobar*, Indiana University, Bloomington
(8625398) 
9:20 a.m.
Existence of the general constant mean curvature torus.
N. Ercolani*, University of Arizona
H. Knorrer, Eidgen\"ossische Technische Hochschule, Switzerland
E. Trubowitz, Eidgen\"ossische Technische Hochschule, Switzerland
(8625384)

7:30 a.m.

Sunday November 11, 1990, 8:00 a.m.9:50 a.m.
Special Session on Interactions Between Group Theory and Logic, III
Room 210, Physical Sciences Classroom Facility

8:00 a.m.
Solvable groups of finite Morley rank.
LuisJaime Corredor*, University of California, Irvine
(8622078) 
8:30 a.m.
Groups and long EhrenfeuchtFraisse games.
Alan H. Mekler*, Simon Fraser University
(8620376) 
9:00 a.m.
The generalized Saffe condition.
Ivo Herzog*, University of California, Irvine
(8620375) 
9:30 a.m.
Finite matrix groups and representation theory of artinian rings.
Birge Zimmermann Huisgen*, University of Utah
(8621626)

8:00 a.m.

Sunday November 11, 1990, 8:00 a.m.9:50 a.m.
Special Session on Probability Theory in Mathematical Physics, II
Room 230, Physical Sciences Classroom Facility

8:00 a.m.
Symmetry and change of measure.
Joe Watkins*, University of Southern California
(8626039) 
8:30 a.m.
Random laws for stationary processes.
Kenneth S. Alexander*, University of Southern California
Steven A. Kalikow, University of Southern California
(8626045) 
9:00 a.m.
Continuity of the percolation transition.
David Barsky*, University of California, Davis
(8626046) 
9:30 a.m.
Quantum sticky spheres and Bessel bridges.
Mathew Penrose*, University of California, Santa Barbara
O. Penrose, University of California, Santa Barbara
G. Stell, University of California, Santa Barbara
R. Pemantle, University of California, Santa Barbara
(8626042)

8:00 a.m.

Sunday November 11, 1990, 10:00 a.m.10:50 a.m.
Invited Address
Nature of the critical phenomenon in selforganized criticality.
0, Physical Sciences Lecture Hall
Jennifer T. Chayes*, University of California, Los Angeles
(86260102) 
Sunday November 11, 1990, 1:00 p.m.1:50 p.m.
Invited Address 
Sunday November 11, 1990, 2:00 p.m.4:20 p.m.
Special Session on Quantum and Statistical Mechanics, II
Room 230, Physical Sciences Classroom Facility

2:00 p.m.
Finite size scaling behavior of a biased majority rule cellular automation.
Roberto H. Schonmann*, University of California, Los Angeles
(8628265) 
2:30 p.m.
Stability of a selforganizing process.
William G. Faris*, University of Arizona
(8628272) 
3:00 p.m.
Renormalizations and thermodynamic formalism.
Konstantin M. Khanin*, Academy of Science of the USSR
(8628264) 
3:30 p.m.
Taufunctions and isomonodromy.
Craig A. Tracy*, University of California, Davis
(8623599) 
4:00 p.m.
Essential selfadjointness of relativistic Schrodinger operators: Path integral methods.
Rene Carmona*, University of California, Irvine
(8628161)

2:00 p.m.

Sunday November 11, 1990, 2:00 p.m.4:30 p.m.
Special Session on Geometric P.D.E.'s: Mean and Scalar Curvature Problems, IV
Room 158, Physical Sciences I

2:00 p.m.
The pendent liquid drop.
Robert Finn*, Stanford University
(8623538) 
2:40 p.m.
The structure of the space of complete embedded minimal surfaces of finite topology.
David Hoffman*, University of Massachusetts, Amherst
(8625382) 
3:20 p.m.
Embedded minimal surfaces and quadratic area growth.
Robert B. Kusner*, University of Massachusetts, Amherst
William H. Meeks, III, University of Massachusetts, Amherst
(8625336) 
4:00 p.m.
The Gauss map of constant mean curvature surfaces of Minkowski space.
H. I. Choi, University of Iowa
Andrejs E. Treibergs*, University of Utah
(8625337)

2:00 p.m.

Sunday November 11, 1990, 2:00 p.m.4:20 p.m.
Special Session on Moduli Space Applications, II
Room 108, Physical Sciences I

2:00 p.m.
Circle packings as moduli for Riemann surfaces.
Robert Brooks*, University of Southern California
(8622214) 
2:30 p.m.
On the Hilbert scheme of codimension 2 subvarieties.
MeiChu Chang*, University of California, Riverside
(8621431) 
3:00 p.m.
Diffeomorphism types of varieties.
Robert Friedman*, Columbia University
(8621432) 
3:30 p.m.
Moduli of rational double points and small resolutions.
Sheldon Katz*, Oklahoma State University, Stillwater
David R. Morrison, Duke University
(8621429) 
4:00 p.m.
A new super KP system and a characterization of the Jacobians of arbitrary algebraic super curves.
Motohico Mulase*, University of California, Davis
(8622213)

2:00 p.m.