AMS Sectional Meeting Program by Day
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1990 Spring Western Section Meeting
Albuquerque, NM, April 1921, 1990
Meeting #858
Associate secretaries:
Lance W Small, AMS
lwsmall@ucsd.edu
Thursday April 19, 1990

Thursday April 19, 1990, 7:30 a.m.9:50 a.m.
AMS Special Session on Real Algebraic Geometry, I
Potters Room, Sheraton Old Town Hotel

7:30 a.m.
Elliptic curves and real algebraic morphisms into 2spheres.
Wojciech Kucharz*, University of Hawaii, Honolulu
(8581491)

8:00 a.m.
Some new results on the topology of nonsingular real algebraic sets.
Selman Akbulut*, Michigan State University
Henry King, University of Maryland, College Park
(8585765)

8:30 a.m.
Relative real holomorphy rings.
M. Buchner*, University of New Mexico
W. Kucharz, University of Hawaii, Honolulu
(8581448)

9:00 a.m.
Real algebraic tranformation groups.
Karl Heinz Dovermann*, University of Hawaii, Honolulu
(8585749)

9:30 a.m.
Discussion

Thursday April 19, 1990, 7:30 a.m.9:50 a.m.
AMS Special Session on Invariant Embedding and Inverse Problems, I
Weaver Room, Sheraton Old Town Hotel

7:30 a.m.
An electromagnetic inverse problem in medical science.
Richard A. Albanese*, Radiation Sciences Division, Brooks AFB, Texas
John W. Penn, Radiation Sciences Division, Brooks AFB, Texas
(8583510)

8:00 a.m.
The inverse scattering problem for hyperbolic systems in semiinfinite media.
Isam S. Ayoubi*, King Fahd University of Petroleum and Minerals, Saudi Arabia
(8583520)

8:30 a.m.
Invariant imbedding, layerstripping, and impedance imaging.
Margaret Cheney*, Rensselaer Polytechnic Institute
David Isaacson, Rensselaer Polytechnic Institute
(8583513)

9:00 a.m.
Exact and approximate solutions of the (Helmholtz) Weyl composition equation in direct and inverse scattering.
Louis Fishman*, Colorado School of Mines
(8583506)

9:30 a.m.
Inverse problems in underwater acoustics.
Robert P. Gilbert*, University of Delaware
Y. Xu, University of Delaware
(8583522)

Thursday April 19, 1990, 10:30 a.m.11:20 a.m.
AMS Invited Address
Can one hear the shape of a drum?
Rio Grande Ballroom, Sheraton Old Town Hotel
Peter B. Gilkey*, University of Oregon
(8585811)

Thursday April 19, 1990, 1:00 p.m.4:00 p.m.
AMS Special Session on Geometry and Topology of Moduli Spaces, I
Isleta Room, Sheraton Old Town Hotel

1:00 p.m.
The topology of certain holomorphic mapping spaces.
Benjamin M. Mann*, University of New Mexico
R. James Milgram, Stanford University
(8585844)

1:30 p.m.
On the structure of certain spaces of polynomials.
Martin Guest*, University of Rochester
(8585535)

2:00 p.m.
On some spaces of real algebraic cycles.
T. K. Lam*, State University of New York, Stony Brook
(8585536)

2:30 p.m.
Rational functions, CayleyDickson algebras, and the Whitehead product.
Fred Cohen*, University of Rochester
(8585566)

3:00 p.m.
Discussion

Thursday April 19, 1990, 1:00 p.m.4:00 p.m.
AMS Special Session on Differential Geometry, I
Potters Room, Sheraton Old Town Hotel

1:00 p.m.
Finiteness of diffeomorphism types of isospectral manifolds.
Robert Brooks*, University of California, Los Angeles
Peter Perry, University of Kentucky
Peter Petersen, V, University of California, Los Angeles
(8585818)

1:30 p.m.
Vibrating fractal drums, the WeylBerry problem for the eigenvalues of the Laplacian, and spectral zetafunctions.
Michel L. Lapidus*, University of Georgia
(8585833)

2:00 p.m.
The spectrum of a surface of revolution.
Martin Engman*, University of New Mexico
(8585389)

2:30 p.m.
The functional determinant and eta invariant in 3 and 4 dimensions.
Thomas P. Branson*, University of Iowa
(8585377)

3:00 p.m.
The isospectral problem on manifolds with boundary.
Matthew J. Gursky*, California Institute of Technology
(8585863)

3:30 p.m.
Discussion

Thursday April 19, 1990, 1:00 p.m.4:00 p.m.
AMS Special Session on Numerical Solution of Partial Differential Equations, I
Jemes Room, Sheraton Old Town Hotel

1:00 p.m.
Symmetric differencing of symmetric operators.
Stanly Steinberg*, University of New Mexico
Patrick J. Roache, Ecodynamics Research Associates Inc., Albuquerque, New Mexico
(8583954)

1:30 p.m.
High order finite volume approximations of differential operators on nonuniform grids.
James M. Hyman*, Los Alamos National Laboratory
Robert J. Knapp, Los Alamos National Laboratory
(8586571)

2:00 p.m.
On discretization errors in the numerical solution of PDE's on generalized coordinate meshes.
Richard G. Hindman*, Iowa State University
(8583583)

2:30 p.m.
Multipoint constraints through projection operators with applications to the finite element method.
Howard L. Schreyer*, University of New Mexico
(8586584)

3:00 p.m.
Conservative, staggered grid discretization for general curvilinear coordinates.
Marcel Vinokur*, Sterling Software, Palo Alto, California
(8583992)

3:30 p.m.
Supraconvergent difference schemes for high performance computational problems.
Andrew B. White, Jr.*, Los Alamos National Laboratory
(8583598)

Thursday April 19, 1990, 4:00 p.m.4:50 p.m.
AMS Invited Address
Convection patterns in large containers.
Rio Grande Ballroom, Sheraton Old Town Hotel
Alan C. Newell*, University of Arizona
(8589995)

Thursday April 19, 1990, 6:00 p.m.11:00 p.m.
AMS Council
Fireplace Room, Sheraton Old Town Hotel
Inquiries: meet@ams.org