AMS Sectional Meeting Program by Day
Current as of Tuesday, April 12, 2005 15:08:42
1990 Central Section Meeting
Manhattan, KS, March 1617, 1990
Meeting #855
Associate secretaries: Andy R Magid, AMS amagid@ou.edu
Friday March 16, 1990

Friday March 16, 1990, 7:30 a.m.9:50 a.m.
Special Session on Geometric Function Theory, I
Room 144, Cardwell Hall

7:30 a.m.
The maximum modulus and characteristic.
David Drasin*, Purdue University, West Lafayette
(85530200) 
8:00 a.m.
Estimates for sets where a meromorphic function is large.
Matts Essen, Uppsala Universirt, Sweden
John Rossi, Virginia Polytechnic Institute and State University
Daniel Shea*, University of Wisconsin, Madison
(85530193) 
8:30 a.m.
An application of the spread relation to algebraic differential equations.
Gary G. Gundersen*, University of New Orleans
(85534138) 
9:00 a.m.
On an L^2 inequality involving entire functions of exponential type.
LiChien Shen*, University of Florida
(85530137) 
9:30 a.m.
Stochastic Loewner equation.
David Rochberg, Washington University
Richard Rochberg*, Washington University
(85530139)

7:30 a.m.

Friday March 16, 1990, 7:30 a.m.9:50 a.m.
Special Session on Inverse Problems and Scattering Theory, I
Room 143, Cardwell Hall

7:30 a.m.
Efficient numerical methods for solving inverse problems of PDE.
Y. M. Chen*, State University of New York, Stony Brook
(8556502) 
8:20 a.m.
Recovery of coefficients in first order hyperbolic equations.
Michael Pilant, Texas A & M University, College Station
William Rundell*, Texas A & M University, College Station
(8553573) 
9:10 a.m.
An iterative method for onedimensional second order inverse spectral problems.
William Rundell, Texas A & M University, College Station
Paul E. Sacks*, Iowa State University
(8553572)

7:30 a.m.

Friday March 16, 1990, 8:00 a.m.9:50 a.m.
Special Session on Harmonic Analysis and Probability Theory, I
Room 131, Cardwell Hall

8:00 a.m.
Martingale transforms and paraproducts.
J.A. Chao*, Cleveland State University
R.L. Long, Academia Sinica, People's Republic of China
(8556051) 
8:30 a.m.
Conformal geometry, Sobolev inequalities and symmetrization.
William Beckner*, University of Texas, Austin
(8554269) 
9:00 a.m.
Fractional integration on tail sigmafields.
Andrew G. Bennett*, Kansas State University
(85560109) 
9:30 a.m.
Superadditivity of Fisher's information and logarithmic Sobolev inequalities.
Eric A. Carlen*, Princeton University
(85562170)

8:00 a.m.

Friday March 16, 1990, 8:00 a.m.9:50 a.m.
Special Session on Orthostructures, I
Room 121, Cardwell Hall

8:00 a.m.
A sheaf representation theorem for Baer and Rickart rings.
Douglas G. Burkholder, Wichita State University
Gary D. Crown*, Wichita State University
(85516161) 
8:30 a.m.
Graph theoretic properties in the context of orthomodular theory.
Gerald Schrag*, Central Missouri State University
Larry Cammack, Central Missouri State University
(85506185) 
9:00 a.m.
On states and generalized state spaces of the generalizations of the Greechie lattice.
Larry Cammack*, Central Missouri State University
Gerald Schrag, Central Missouri State University
(85506187) 
9:30 a.m.
Computational systems for research on orthostructures.
William David Miller*, Oklahoma State University, Stillwater
(85568196)

8:00 a.m.

Friday March 16, 1990, 8:00 a.m.9:50 a.m.
Special Session on Partial Differential Equations, I
Room 129, Cardwell Hall

8:00 a.m.
Leastenergy solutions to a semilinear Neumann problem related to biological pattern formation.
Izumi Takagi*, Tohoku University, Japan
(85535188) 
8:30 a.m.
Spatially degenerate nonlinear diffusion with drift and the Wentzel boundary condition.
Jerome A. Goldstein*, Tulane University
ChinYuan Lin, Texas A\thsp\&\thsp M University, College Station
(85535118) 
9:00 a.m.
Stability and Hopf bifurcation of solutions of the Dirichlet problem for diffusive predatorprey systems.
Robert Gardner*, University of Massachusetts, Amherst
(8553543) 
9:30 a.m.
A quasilinear parabolic problem in one space dimension.
J. R. Dorroh, Louisiana State University, Baton Rouge
Gisele Ruiz Rieder*, Louisiana State University, Baton Rouge
(85535191)

8:00 a.m.

Friday March 16, 1990, 8:00 a.m.9:50 a.m.
Special Session on Commutative Algebra, I
Room 102, Cardwell Hall

8:00 a.m.
Galois theory on the line.
Shreeram S. Abhyankar*, Purdue University, West Lafayette
(8551407) 
8:30 a.m.
Finite generation of monoids of fractional ideals.
D. D. Anderson*, University of Iowa
(8551312) 
9:00 a.m.
Intersection multiplicity of modules.
Sankar Prasad Dutta*, University of Illinois, UrbanaChampaign
(85513146) 
9:30 a.m.
Finite phantom projective dimension.
Ian M. Aberbach*, University of Michigan, Ann Arbor
(8551395)

8:00 a.m.

Friday March 16, 1990, 8:00 a.m.9:50 a.m.
Special Session on Ergodic Theory, I
Room 130, Cardwell Hall

8:00 a.m.
Ergodic theorems for subsequences and moving averages.
Roger L. Jones*, DePaul University
(8554274) 
8:30 a.m.
A maximal inequality and its consequences in ergodic theory.
J. Rosenblatt, Ohio State University, Columbus
M. Wierdl*, Ohio State University, Columbus
(85528179) 
9:00 a.m.
On induced operators.
R. E. Bradley*, Northwestern University
(8552837) 
9:30 a.m.
Failure of the WienerWintner property for the helical transform in L^1.
Idris Assani*, University of North Carolina, Chapel Hill
(8552839)

8:00 a.m.

Friday March 16, 1990, 8:00 a.m.9:50 a.m.
Special Session on Graph Theory, I
Room 146, Cardwell Hall

8:00 a.m.
Coloring tournaments.
Kunwarjit S. Bagga, Ball State University
Lowell W. Beineke*, Indiana UniversityPurdue University, Ft.\ Wayne
Frank Harary, New Mexico State University, Las Cruces
(85505114) 
8:30 a.m.
A combinatorial approach to the integral multicommodity flow problem with application to the packed routing.
F. Shahrokhi, North Texas University
L. A. Sz\'ekely*, University of New Mexico
(8550548) 
9:00 a.m.
kgraphs with uniformly distributed subgraphs.
F. R. K. Chung, Bell Communications Research, Morristown, NJ
R. L. Graham*, AT&T Bell Laboratories, Murray Hill, New Jersey
(8550587) 
9:30 a.m.
Quasirandom classes of hypergraphs.
Fan R. K. Chung*, Bellcore, Morristown, New Jersey
(85505113)

8:00 a.m.

Friday March 16, 1990, 8:00 a.m.9:50 a.m.
Special Session on Groups and Geometries, I
Room 145, Cardwell Hall

8:00 a.m.
Extending morphisms of groups and graphs.
Michael Aschbacher*, California Institute of Technology
Yoav Segev, Ben Gurion University, Israel
(85520152) 
8:30 a.m.
A Cayley integer approach to the Leech lattice.
George Glauberman*, University of Chicago
(8552049) 
9:00 a.m.
Applications of algebraic curves to the representation theory of SL_2.
Geoffrey Mason*, University of California, Santa Cruz
(8552018) 
9:30 a.m.
Sharply transitive linear groups over algebraically closed fields.
G. Cherlin, Rutgers University, New Brunswick
T. Grundh\"ofer, University T\"ubingen, Federal Republic of Germany
A. Nesin, University of California, Irvine
H. Voelklein*, University of Florida
(8552040)

8:00 a.m.

Friday March 16, 1990, 8:00 a.m.9:50 a.m.
Special Session on Applications of Category Theory, I
Room 103, Cardwell Hall

8:00 a.m.
Categorysorted algebra and its applications.
David A. Schmidt*, Kansas State University
(8551896) 
8:30 a.m.
Compact pairs and generalized perfect maps.
Eraldo Giuli*, Universit\`a degli Studi di L'Aquila, Italy
(8551831) 
9:00 a.m.
Groups of dualities.
Georgi D. Dimov, Bulgarian Academy of Sciences, Bulgaria
Walter Tholen*, York University
(8551829) 
9:30 a.m.
Internal description of hulls.
Friedhelm Schwarz, University of Toledo
Sibylle WeckSchwarz*, University of Toledo
(8551886)

8:00 a.m.

Friday March 16, 1990, 8:00 a.m.9:30 a.m.
Session on Algebra
Room 120, Cardwell Hall

8:00 a.m.
Rings of integervalued polynomials over semilocal PID's.
Jim Brewer*, Florida Atlantic University
Lee Klingler, Florida Atlantic University
(8551352) 
8:20 a.m.
The Picard group for the commutative ring theorist.
F. W. Call*, University of Michigan, Ann Arbor
R. Heitmann, University of Texas, Austin
(8551324) 
8:40 a.m.
Gr\"obner bases and automorphisms of polynomial ring.
Wei Li*, Purdue University, West Lafayette
(8551308) 
9:00 a.m.
Infinitesimal extensions of glued varieties.
Khomo T. S. Mohapeloa*, Pennsylvania State University, McKeesport, PA
(85514183) 
9:20 a.m.
On an extremal problem in the Bloch space.
Flavia Colonna*, George Mason University
(8553089)

8:00 a.m.

Friday March 16, 1990, 10:00 a.m.11:00 a.m.
Invited Address
Modular forms and the Riemann zetafunction.
Room 101, Cardwell Hall
J. Brian Conrey*, Oklahoma State University
(85511173) 
Friday March 16, 1990, 12:30 p.m.1:30 p.m.
Invited Address
Representation theory and stable homotopy of finite groups.
Room 101, Cardwell Hall
Stewart B. Priddy*, Northwestern University
(85555184) 
Friday March 16, 1990, 2:00 p.m.4:50 p.m.
Special Session on Harmonic Analysis and Probability Theory, II
Room 131, Cardwell Hall

2:00 p.m.
Intrinsic ultracontractivity and eigenfuction estimates for the Schrodinger operators.
Rodrigo Ba\~nuelos*, Purdue University, West Lafayette
(8553136) 
2:30 p.m.
Distribution function inequalities for the density of the area integral.
Rodrigo Ba\~nuelos, Purdue University, West Lafayette
Charles Moore*, Purdue University, West Lafayette
(85531141) 
3:00 p.m.
On the almost sure behavior of sums of iid random variables in Hilbert space.
Uwe Einmahl*, Indiana University, Bloomington
(8556068) 
3:30 p.m.
On weak convergence in dynamical systems to selfsimilar processes.
Michael Lacey*, Indiana University, Bloomington
(8556054) 
4:00 p.m.
Ergodic averages on spheres.
Roger L. Jones*, DePaul University
(8554270) 
4:30 p.m.
Almost everywhere convergence of convolution powers.
A. Bellow, Northwestern University
R. Jones, DePaul University
Joseph Rosenblatt*, Ohio State University, Columbus
(85560157)

2:00 p.m.

Friday March 16, 1990, 2:00 p.m.4:20 p.m.
Special Session on Orthostructures, II
Room 121, Cardwell Hall

2:00 p.m.
Filters in orthoalgebras and their relationship to supports in test spaces.
Andrew S. Golfin, Jr.*, Gettysburg College
(85506163) 
2:30 p.m.
Coupled entities.
David J. Foulis*, University of Massachusetts, Amherst
(85581162) 
3:00 p.m.
Refinement and unique Mackey decomposition for manuals and orthoalgebras.
Matthew B. Younce*, Rhode Island College
(8550656) 
3:30 p.m.
sigmamanuals.
Alexander Wilce*, University of New Hampshire
(85506160) 
4:00 p.m.
Convergence of observables on quantum logics.
Stanley Gudder*, University of Denver
(8550603)

2:00 p.m.

Friday March 16, 1990, 2:00 p.m.4:20 p.m.
Special Session on Numerical Analysis, I
Room 122, Cardwell Hall

2:00 p.m.
Vortex dynamics of hovering mode.
Karl Gustafson*, University of Colorado, Boulder
(8556505) 
2:30 p.m.
Quasimolecular fluid modeling.
Donald Greenspan*, University of Texas, Arlington
(8556578) 
3:00 p.m.
LyapunovSchmidt reduction for the crossing of two neutral curves in TaylorCouette flow.
John H. Bolstad*, University of California, Livermore
Michael E. Henderson, IBM T. J. Watson Research Center, Yorktown Heights, New York
(8556577) 
3:30 p.m.
Bifurcation of periodic solutions of singularly perturbed delay differential equation.
Abdullah J. Tamraz*, Wichita State University
(85565128) 
4:00 p.m.
Numerical computation of water waves in a potential flow.
C. H. Su*, Brown University
(8556576)

2:00 p.m.

Friday March 16, 1990, 2:00 p.m.5:20 p.m.
Special Session on Geometric Function Theory, II
Room 144, Cardwell Hall

2:00 p.m.
On some almost everywhere overdetermined boundary value problems.
John Lewis*, University of Kentucky
Andrew Vogel, University of Kentucky
(8553122) 
2:30 p.m.
Note on A_infinity and level sets of conformal mappings.
Juha Heinonen*, University of Michigan, Ann Arbor
(85530102) 
3:00 p.m.
The Dirichlet problem for the infinityLaplacian.
Tilak Bhattacharya, Northwestern University
Emanuelle DiBenedetto, Northwestern University
Juan Manfredi*, University of Pittsburgh, Pittsburgh
(85535116) 
3:30 p.m.
Composition operators and angular derivatives.
Tom Carroll*, Purdue University, West Lafayette
(85530140) 
4:00 p.m.
Discrete quasiconformal groups with small dilatation.
M. Jean McKemie*, St. Edward's University
(8553094) 
4:30 p.m.
Boundary values for some classes of functions.
Enrique Villamor*, Florida International University
(85530115) 
5:00 p.m.
Generalised conformal welding.
David H. Hamilton*, University of Maryland, College Park
(8553057)

2:00 p.m.

Friday March 16, 1990, 2:00 p.m.4:50 p.m.
Special Session on Partial Differential Equations, II
Room 129, Cardwell Hall

2:00 p.m.
A RiemannLebesque lemma for mathematical ecology.
Robert Stephen Cantrell*, University of Miami
Chris Cosner, University of Miami
(85535125) 
2:30 p.m.
Positive solutions of systems of nonlinear eigenvalue problems.
Nela Lako\v s*, Ohio State University, Columbus
(85535182) 
3:00 p.m.
Minimal solutions of superlinear equations.
Allan Edelson*, University of California, Davis
(85535194) 
3:30 p.m.
Semilinear elliptic problems at resonance  some space dimension dependent results.
Renate Schaaf*, University of Utah
Klaus Schmitt, University of Utah
(85535100) 
4:00 p.m.
Towards a theory for quasilinear PDEs in structured population dynamics.
Horst R. Thieme*, Arizona State University
(85535199) 
4:30 p.m.
Rearrangements and vorticity.
Alan Elcrat*, Wichita State University
Kenneth Miller, Wichita State University
(8553484)

2:00 p.m.

Friday March 16, 1990, 2:00 p.m.4:50 p.m.
Special Session on Commutative Algebra, II
Room 102, Cardwell Hall

2:00 p.m.
Curve singularities of finite CohenMacaulay type.
Roger Wiegand*, University of Nebraska, Lincoln
(85513197) 
2:30 p.m.
Local cohomology of Rees algebras and Hilbert functions.
Bernard Johnston*, Louisiana State University, Baton Rouge
Jugal Verma, Louisiana State University, Baton Rouge
(85513144) 
3:00 p.m.
Modules with linear syzygies.
David Eisenbud, Brandeis University
Jee Koh*, Indiana University, Bloomington
(85513143) 
3:30 p.m.
Etale cohomology and the topology of algebraic varieties.
Gennady Lyubeznik*, University of Chicago
(85514142) 
4:00 p.m.
Unmixed local rings of type two are CohenMacaulay.
Thomas Marley*, University of Nebraska, Lincoln
(85513176) 
4:30 p.m.
Canonical resolution of hypersurface singularities of characteristic zero.
T. T. Moh*, Purdue University, West Lafayette
(85513177)

2:00 p.m.

Friday March 16, 1990, 2:00 p.m.4:30 p.m.
Special Session on Inverse Problems and Scattering Theory, II
Room 143, Cardwell Hall

2:00 p.m.
Inverse scattering at fixed energy in three dimensions.
A. G. Ramm*, University of Kansas
(8553527) 
2:55 p.m.
Two inverse problems for partial differential equations.
Mikhail V. Klibanov*, Courant Institute of Mathematical Sciences, New York University
(8553563) 
3:50 p.m.
Clifford Tori and overdetermined problems.
Carlos Berenstein*, University of Maryland, College Park
Max Karlovitz, University of Maryland, College Park
(8553560)

2:00 p.m.

Friday March 16, 1990, 2:00 p.m.4:20 p.m.
Special Session on Ergodic Theory, II
Room 130, Cardwell Hall

2:00 p.m.
Cayley graphs and recurrence in dynamical systems.
Alan Forrest*, Ohio State University, Columbus
(8552838) 
2:30 p.m.
Some remarks on the convergence of weighted ergodic averages.
I. Kornfeld*, North Dakota State University
(85528149) 
3:00 p.m.
Random sampling of stationary processes.
Karl Petersen*, University of North Carolina, Chapel Hill
(8552862) 
3:30 p.m.
On almost everywhere convergence of convolution powers in L^1(X).
Karin ReinholdLarsson*, Ohio State University, Columbus
(85528148) 
4:00 p.m.
Two applications of a theorem on invariant measures for multiplication.
Daniel J. Rudolph*, University of Maryland, College Park
(85528181)

2:00 p.m.

Friday March 16, 1990, 2:00 p.m.4:20 p.m.
Special Session on Graph Theory, II
Room 146, Cardwell Hall

2:00 p.m.
Unavoidable subgraphs of sparse graphs: Lagniappe.
C. A. Barefoot, University of New Mexico
L. H. Clark, University of New Mexico
R. C. Entringer*, University of New Mexico
A. A. Kooshesh, University of New Mexico
L. A. Sz\'ekely, University of New Mexico
(8550575) 
2:30 p.m.
Homomorphisms with the lifting property.
Bennet Manvel*, Colorado State University
Richard Osborne, Colorado State University
(8550593) 
3:00 p.m.
A prime number theorem for normed graphs.
Robin J. Wilson*, Open University, England
(85505112) 
3:30 p.m.
Size and independence in trianglefree graphs with fixed maximum degree.
Kathryn F. Jones*, University of Colorado
(8550588) 
4:00 p.m.
An upper bound for the average number of regions.
Saul Stahl*, University of Kansas
(8550521)

2:00 p.m.

Friday March 16, 1990, 2:00 p.m.3:50 p.m.
Special Session on Groups and Geometries, II
Room 145, Cardwell Hall

2:00 p.m.
Highweight modules for quotients of affine buildings.
Stephen D. Smith*, University of Illinois, Chicago
(8552011) 
2:30 p.m.
Ru less < E_7(5).
Ulrich Meierfrankenfeld*, Michigan State University
(85520159) 
3:00 p.m.
Groups generated by 3transpositions.
Jonathan I. Hall*, Michigan State University
(85520107) 
3:30 p.m.
Informal Discussion

2:00 p.m.

Friday March 16, 1990, 2:00 p.m.4:20 p.m.
Special Session on Applications of Category Theory, II
Room 103, Cardwell Hall

2:00 p.m.
Categorical foundations and set theory.
Saunders Mac Lane*, University of Chicago
(8551815) 
2:30 p.m.
Does anybody really know what a Hopf algebra is?
Robert Pare*, Dalhousie University
(8551842) 
3:00 p.m.
Metatheory of Boolean categories.
Ernest G. Manes*, University of Massachusetts, Amherst
(8551835) 
3:30 p.m.
Weak adjunctions between categories of CPO's.
Michael W. Mislove, Tulane University
Frank J. Oles*, University of Pennsylvania and IBM T. J. Watson Research Center, Yorktown Heights, New York
(85568127) 
4:00 p.m.
Completions of continuous posets and modules of concurrency.
Michael W. Mislove*, Tulane University
(85568192)

2:00 p.m.

Friday March 16, 1990, 2:00 p.m.3:30 p.m.
General Session
Room 120, Cardwell Hall

2:00 p.m.
The value of certain determinants with elements zero and one.
Dale Woods*, Central State University
D. J. Boyce, Central State University
(85515136) 
2:20 p.m.
Total cosine of normal matrices.
Morteza Seddighin*, Panhandle State University
(85515147) 
2:40 p.m.
Expansions of chromatic polynomials and logconcavity.
Francesco Brenti*, University of Michigan, Ann Arbor
(8550541) 
3:00 p.m.
An inverse convolution method for regular parabolic equations.
B. A. Mair*, University of Florida
D. S. Gilliam, Texas Tech University
C. F. Martin, Texas Tech University
(8553545) 
3:20 p.m.
Badug tablet.
Myungkark Park*, Prompter Publications, Cincinnati, Ohio
(85511201)

2:00 p.m.