
AMS Sectional Meeting Full Program
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1991 Central Section Meeting
South Bend, IN, March 1516, 1991
Meeting #864
Associate secretaries: Andy R Magid, AMS amagid@ou.edu
Friday March 15, 1991

Friday March 15, 1991, 8:00 a.m.9:50 a.m.
Special Session on Mathematical Economics and Dynamical Systems, I
Room 01, Northside Hall

8:00 a.m.
New methods for the analysis of broad band time series.
Robert Savit*, University of Michigan, Ann Arbor
(86490134)

8:30 a.m.
Learning while playing via classifier systems.
Carl P. Simon*, University of Michigan, Ann Arbor
(86490143)

9:00 a.m.
Comparative statics of dynamic programming.
Mark Feldman, University of Illinois, UrbanaChampaign
Andrew McLennan*, University of Minnesota, Minneapolis
(86490142)

9:30 a.m.
Privacy preserving mechanisms.
Kenneth R. Mount*, Northwestern University
(86490147)

Friday March 15, 1991, 8:00 a.m.9:50 a.m.
Special Session on Geometric Topology, I
Room 06, Northside Hall

8:00 a.m.
Coverings of singular spaces.
Mathew Timm*, Bradley University
(8645770)

8:30 a.m.
Psuedofree orbifolds of low rank.
Dariusz M. Wilczynski*, University of Notre Dame
(86457108)

9:00 a.m.
Intersection homology and topological quantum field theory.
Charles Frohman*, University of Iowa
A. Nicas, McMaster University
(8645785)

9:30 a.m.
On exotic smoothings of 4manifolds.
\v Zarko Bi\v zaca*, University of Notre Dame
(8645788)

Friday March 15, 1991, 8:00 a.m.9:50 a.m.
Special Session on Noncommutative Ring Theory, I
Room 05, Northside Hall

8:00 a.m.
Dubrovin valuation rings in crossed product algebras.
Darrell Haile*, Indiana University, Bloomington
Patrick Morandi, New Mexico State University, Las Cruces
(86416112)

8:30 a.m.
Valuations on group rings in nonzero characteristic.
Alexander Lichtman*, University of Wisconsin, Parkside
(86416118)

9:00 a.m.
Remarks on graded and filtered algebras.
E. Behr*, Illinois State University
(86416117)

9:30 a.m.
Noncommutative algebraic geometry and representations.
Alexander L. Rosenberg*, Harvard University
(86413119)

Friday March 15, 1991, 8:00 a.m.9:50 a.m.
Special Session on Hilbert Spaces of Analytic Functions, I
Room 107, Northside Hall

8:00 a.m.
Interpolation by multipliers of the Dirichlet space.
Sheldon Axler*, Michigan State University
(8644656)

8:30 a.m.
The nwidth of the unit ball of H^2(CAP OMEGA).
Stephen D. Fisher*, Northwestern University
(8643033)

9:00 a.m.
Proper holomorphic mappings and the CowenDouglas class.
Norberto Salinas*, University of Kansas
(8644741)

9:30 a.m.
Multiplication operators on functional Hilbert spaces in several variables.
Raul E. Curto*, University of Iowa
(8644760)

Friday March 15, 1991, 8:00 a.m.9:50 a.m.
Special Session on Probability and Prediction Theory, I
Room 013, Northside Hall

8:00 a.m.
On mixing conditions and Markov representation.
Richard C. Bradley*, Indiana University, Bloomington
(8646008)

8:30 a.m.
Necessary and sufficient conditions for a secondorder WienerIto integral process to be mixing.
Daniel W. Chambers*, Boston College
(8646036)

9:00 a.m.
Limit theorems for nonlinear functions of a stationary vectorvalued Gaussian process.
TaeIl Jeon, Wayne State University
TzeChien Sun*, Wayne State University
(8646062)

9:30 a.m.
Prediction for I.D. processes: Some recent developments.
Balram S. Rajput*, University of Tennessee, Knoxville
(8646018)

Friday March 15, 1991, 10:00 a.m.10:50 a.m.
Invited Address
Infinitedimensional skew fields.
Room 113, Northside Hall
Leonid G. MakarLimanov*, Wayne State University
(86416144)

Friday March 15, 1991, 12:30 p.m.1:20 p.m.
Invited Address
Simplicial complexes associated to finite groups and their representations.
Room 113, Northside Hall
Stephen D. Smith*, University of Illinois, Chicago and California Institute of Technology
(86420145)

Friday March 15, 1991, 2:00 p.m.5:20 p.m.
Special Session on Mathematical Economics and Dynamical Systems, II
Room 01, Northside Hall

2:00 p.m.
A gametheoretic characterization of competitive economies.
Myrna H. Wooders*, University of Toronto
(8649023)

2:30 p.m.
On the mathematical structure of large games with imperfect information.
M. Ali Khan*, Johns Hopkins University, Baltimore
(8649048)

3:00 p.m.
A characterization of random matching schemes.
Richard Boylan*, Washington University
(8649025)

3:30 p.m.
Recursive utility: Discrete time theory.
R. A. Becker*, Indiana University, Bloomington
J. H. Boyd, III, University of Rochester
(8649047)

4:00 p.m.
Intermediation, bubbles, and Pareto efficiency in economies with production.
Mark Pingle, University of Nevada
Leigh Tesfatsion*, Iowa State University
(8649079)

4:30 p.m.
Projection and aggregation paradoxes in statistical rankings.
Deanna B. Haunsperger*, Northwestern University and University of Delaware
(8649022)

5:00 p.m.
Some aspects of information sigmafields in general equilibrium theory.
Beth Allen*, University of Pennsylvania
(8649002)

Friday March 15, 1991, 2:00 p.m.3:50 p.m.
Special Session on Simplicial Complexes Associated to Finite Groups and their Representations, I
Room 106, Northside Hall

2:00 p.m.
The local determination of Mackey functors.
Peter J. Webb*, University of Minnesota, Minneapolis
(86420128)

2:30 p.m.
Complexes in block theory.
Geoffrey Robinson*, University of Florida
(8642096)

3:00 p.m.
On the topology of conjugacy classes.
J. L. Alperin*, University of Chicago
(8642032)

3:30 p.m.
Permutation complexes and homology representations.
Amir H. Assadi*, University of Wisconsin, Madison
(8645795)

Friday March 15, 1991, 2:00 p.m.3:20 p.m.
Special Session on Model Theory, I
Room 09, Northside Hall

2:00 p.m.
Definability over definable sets.
David W. Kueker, University of Maryland, College Park
Philip W. Steitz*, Beloit College
(86403106)

2:30 p.m.
Projective planes associated with algebraically closed fields.
Kitty L. Holland*, University of Illinois, Chicago
(8640383)

3:00 p.m.
Uncountable weakly minimal theories.
Philipp Rothmaler*, Univeristy of Kiel, Federal Republic of Germany
(86403111)

Friday March 15, 1991, 2:00 p.m.4:20 p.m.
Special Session on Geometric Topology, II
Room 06, Northside Hall

2:00 p.m.
Groups with infinite virtual cohomological dimension which act freely on R^m x S^n1.
Stratos Prassidis*, McMaster University
(86457109)

2:30 p.m.
Asymptotic aspects of group actions.
Christopher W. Stark*, University of Florida
(86457133)

3:00 p.m.
Nil groups in Ktheory and surgery.
Frank X. Connolly, University of Notre Dame
Tadeusz Ko\'zniewski*, University of Notre Dame
(86457135)

3:30 p.m.
Counting simplehomotopy types.
Steven C. Ferry*, State University of New York, Binghamton
(86457139)

4:00 p.m.
Informal Discussion

Friday March 15, 1991, 2:00 p.m.4:20 p.m.
Special Session on Algebraic Topology, I
Room 08, Northside Hall

2:00 p.m.
Divisibility properties of the integral cohomology ring of BSpin(n).
Jay A. Wood*, Purdue University, Calumet Campus
(8645510)

2:30 p.m.
On the homotopy theory of structured ring spectra.
Thomas Hunter*, University of Kentucky
(8645530)

3:00 p.m.
The Adams spectral sequence for the homotopy of spheres.
Robert R. Bruner*, Wayne State University
(8645571)

3:30 p.m.
Constructing homology theories from group theory.
K. Lesh*, Brandeis University
(8645515)

4:00 p.m.
The bar construction for spectra.
Anthony D. Elmendorf*, Indiana University, South Bend
(8645519)

Friday March 15, 1991, 2:00 p.m.3:50 p.m.
Special Session on Noncommutative Ring Theory, II
Room 05, Northside Hall

2:00 p.m.
Monomorphisms of the Weyl algebra.
Carolyn Dean*, University of Michigan, Ann Arbor
Jeanne Wald Kerr, Michigan State University
(86416114)

2:30 p.m.
Commutativity techniques in the Weyl algebra.
Jeanne Wald Kerr*, Michigan State University
Carolyn Dean, University of Michigan, Ann Arbor
(86416113)

3:00 p.m.
Mappings on skew polynomial rings.
Jerry D. Rosen*, California State University, Northridge
Mary P. Rosen, California State University, Northridge
(86416102)

3:30 p.m.
A criterion for a module to be injective and some applications.
Ian M. Musson*, University of Wisconsin, Milwaukee
(86416104)

Friday March 15, 1991, 2:00 p.m.4:20 p.m.
Special Session on Hilbert Spaces of Analytic Functions, II
Room 107, Northside Hall

2:00 p.m.
Commutants of subnormal operators.
W. R. Wogen*, University of North Carolina, Chapel Hill
(8644709)

2:30 p.m.
The factorization of functions in the polydisc.
Hari Bercovici, Indiana University, Bloomington
Derek Westwood*, Wright State University
(8643261)

3:00 p.m.
Julia operators and complementation in Krein spaces.
Michael A. Dritschel*, Purdue University, West Lafayette
James Rovnyak, University of Virginia
(8644782)

3:30 p.m.
Toeplitz operators on weighted Hardy spaces.
B. Mark Davis, University of California, Berkeley
John E. McCarthy*, Indiana University, Bloomington
(8644637)

4:00 p.m.
NevanlinnaPick interpolation on multiply connected domains.
Joseph A. Ball*, Virginia Polytechnic Institute and State University
Kevin F. Clancey, University of Georgia
(8643027)

Friday March 15, 1991, 2:00 p.m.5:20 p.m.
Special Session on Probability and Prediction Theory, II
Room 013, Northside Hall

2:00 p.m.
Deconvolutions and the commutant lifting theorem.
Ciprian Foias*, Indiana University, Bloomington
(86447100)

2:30 p.m.
Infinite dimensional stationary sequences with multipicity one.
A. Makagon, Michigan State University
H. Salehi*, Michigan State University
(8646053)

3:00 p.m.
Continuous time periodically correlated processes: Spectrum and prediction.
A. Makagon*, Technical University of Wroclaw, Poland and Michigan State University
A. G. Miamee, Hampton University
H. Salehi, Michigan State University
(8646072)

3:30 p.m.
Correlation autoregressive processes.
A. G. Miamee*, Hampton University
(8646073)

4:00 p.m.
J. von Neumann alternating projections and interpolation of stationary processes.
Mohsen Pourahmadi*, Northern Illinois University
(86460101)

4:30 p.m.
Informal Discussion

5:00 p.m.
Unrestrained relative entropy.
P. R. Masani*, University of Pittsburgh, Pittsburgh
(8646099)

Friday March 15, 1991, 2:00 p.m.4:10 p.m.
Session on Foundations, Combinatorics, and Algebra
Room 105, Northside Hall

2:00 p.m.
The relative strength of two union theorems without AC.
Paul Howard*, Eastern Michigan University
(86403127)

2:15 p.m.
twise balanced design.
D. K. RayChaudhuri, Ohio State University, Columbus
Tianbao Zhu*, Ohio State University, Columbus
(8640503)

2:30 p.m.
Dependence systems.
Marcin Schroeder*, Southern Illinois University, Carbondale
(86406141)

2:45 p.m.
Filets in autometrized algebras.
Mary Hansen*, Indiana University, Kokomo
(8640697)

3:00 p.m.
Rings whose cyclics have finite Goldie dimension.
A. H. AlHuzali, Ohio University, Athens
S. K. Jain, Ohio University, Athens
S. R. LopezPermouth*, Ohio University, Athens
(8641692)

3:15 p.m.
Constructing injective hulls for sums of injectives.
A. H. AlHuzali*, Ohio University, Athens
S. K. Jain, Ohio University, Athens
S. R. LopezPermouth, Ohio University, Athens
(8641664)

3:30 p.m.
On nearness algebras.
Vijaya Gompa*, Ball State University
(86418126)

3:45 p.m.
Cayley algebras and the isomorphisms of orthogonal groups in characteristic two.
Mary T. Treanor*, Valparaiso University
(86420130)

4:00 p.m.
On the near Frattini subgroups of ordinary free products of groups.
Mohammad K. Azarian*, University of Evansville
(8642042)
Saturday March 16, 1991

Saturday March 16, 1991, 7:00 a.m.9:50 a.m.
Special Session on Probability and Prediction Theory, III
Room 013, Northside Hall

7:00 a.m.
Level crossings, multiple Wiener integrals, and prediction.
Eric V. Slud*, University of Maryland, College Park
(8646039)

7:30 a.m.
Stability in distribution for a class of singular diffusions.
Gopal Basak, University of California, Berkeley
Rabi Bhattacharya*, Indiana University, Bloomington
(8646054)

8:00 a.m.
On the a.s. convergence in the sampling theorem.
Christian Houdr\'e*, University of Maryland, College Park
(8646038)

8:30 a.m.
Central limit theorems for classical fiber bundles.
Joseph Yukich*, Lehigh University
(8646029)

9:00 a.m.
Simulations of solutions of stochastic differential equations.
Philip Protter*, Purdue University, West Lafayette
(8646055)

9:30 a.m.
Logistic prediction of exceedances.
Benjamin Kedem*, University of Maryland, College Park
(8646252)

Saturday March 16, 1991, 7:30 a.m.9:50 a.m.
Special Session on Mathematical Economics and Dynamical Systems, III
Room 01, Northside Hall

7:30 a.m.
Semialgebraic economies.
Donald J. Brown*, Stanford University
Rosa L. Matzkin, Yale University
(86490146)

8:00 a.m.
A survey of equilibrium methods in incomplete market models.
Wayne J. Shafer*, University of Illinois, UrbanaChampaign
(8649049)

8:30 a.m.
Existence of equilibrium in infinite horizon economies with taxes.
Larry E. Jones*, Northwestern University
Rodolfo E. Manuelli, Stanford University
(8649026)

9:00 a.m.
Core equivalence and the overlapping generations model.
C. D. Aliprantis, Indiana UniversityPurdue University, Indianapolis
Owen Burkinshaw*, Indiana UniversityPurdue University, Indianapolis
(8649020)

9:30 a.m.
A dynamical system in the study of Ramsey equilibria.
Ciprian Foias*, Indiana University, Bloomington
Robert A. Becker, Indiana University, Bloomington
(8649021)

Saturday March 16, 1991, 7:30 a.m.9:50 a.m.
Special Session on Algebraic Topology, II
Room 08, Northside Hall

7:30 a.m.
Decomposition theorems in the Ktheory of simplicial rings.
Ross E. Staffeldt*, New Mexico State University, Las Cruces
(8641906)

8:00 a.m.
Clones of spaces and maps in homotopy theory.
C. A. McGibbon*, Wayne State University
Jesper Moller, Mathematical Institute, University of Copenhagen, Denmark
(8645566)

8:30 a.m.
The equivariant suspension theorem.
L. Gaunce Lewis, Jr.*, Syracuse University
(8645507)

9:00 a.m.
Completions of Gspectra at ideals of the Burnside ring.
J. P. May*, University of Chicago
(8645516)

9:30 a.m.
The Lin tower and v_iperiodicity in Brown Peterson homology.
Hal Sadofsky*, Johns Hopkins University, Baltimore
(8645513)

Saturday March 16, 1991, 8:00 a.m.9:50 a.m.
Special Session on Simplicial Complexes Associated to Finite Groups and their Representations, II
Room 106, Northside Hall

8:00 a.m.
Simple connectivity of pgroup complexes.
Michael Aschbacher*, California Institute of Technology
(8642091)

8:30 a.m.
A structure theorem for groups of weak characteristic ptype.
Alberto L. Delgado*, Kansas State University
(8642063)

9:00 a.m.
Some projective modules determined by sporadic geometries.
A. J. E. Ryba*, Marquette University
Stephen D. Smith, University of Illinois, Chicago
Satoshi Yoshiara, Hirosaki University, Japan
(86420129)

9:30 a.m.
Subgroup complexes and cohomology of sporadic simple groups.
Alejandro Adem*, University of Wisconsin, Madison
(8645514)

Saturday March 16, 1991, 8:00 a.m.9:50 a.m.
Special Session on Geometric Topology, III
Room 06, Northside Hall

8:00 a.m.
Periodicity in equivariant surgery.
Min Yan*, University of Chicago and Pennsylvania State University, University Park
(8645793)

8:30 a.m.
Torsion invariants and algebraic Ktheory of von Neumann algebras.
Wolfgang L\H uck*, University of Kentucky
(8644690)

9:00 a.m.
Classification of simply connected six dimensional manifolds.
Herman J. Serrano*, University of Notre Dame
(86457138)

9:30 a.m.
HP^2bundles and elliptic homology.
Matthias Kreck, University of Mainz, Federal Republic of Germany
Stephan Stolz*, University of Notre Dame
(86457136)

Saturday March 16, 1991, 8:00 a.m.9:50 a.m.
Special Session on Noncommutative Ring Theory, III
Room 05, Northside Hall

8:00 a.m.
On the theory of Frobenius extensions and its application to Lie superalgebras.
Allen D. Bell*, University of Wisconsin, Milwaukee
Rolf Farnsteiner, University of Wisconsin, Milwaukee
(86416116)

8:30 a.m.
Examples of rings with computable finitistic dimension.
Ellen Kirkman*, Wake Forest University
(8641651)

9:00 a.m.
Universal localization and indecomposable modules of widetilde A_11.
Mike May, S.J.*, Cambridge, Massachusetts
(8641667)

9:30 a.m.
Hidden matrices.
L. S. Levy, University of Wisconsin, Madison
J. C. Robson, University of Leeds, England
J. T. Stafford*, University of Michigan, Ann Arbor
(86416121)

Saturday March 16, 1991, 8:00 a.m.9:50 a.m.
Special Session on Hilbert Spaces of Analytic Functions, III
Room 107, Northside Hall

8:00 a.m.
LevyHincin type theorems for multiplicative and additive free convolution.
Hari Bercovici*, Indiana University, Bloomington
Dan Voiculescu, University of California, Berkeley
(8643075)

8:30 a.m.
Index theory of Toeplitz algebras on flows.
Efton Park*, Indiana UniversityPurdue University, Indianapolis
(8644758)

9:00 a.m.
The invariant subspaces that lie between two Bergman spaces.
William T. Ross*, University of Virginia
(8644759)

9:30 a.m.
Spectra of some composition operators.
Carl C. Cowen*, Purdue University, West Lafayette
Barbara D. MacCluer, University of Richmond
(8644735)

Saturday March 16, 1991, 8:00 a.m.9:55 a.m.
Session on Geometry, Analysis, and Probability
Room 105, Northside Hall

8:00 a.m.
Lie algebras and Lagrangian mechanics.
Jerzy Kocik*, Southern Illinois University, Carbondale
(86453140)

8:15 a.m.
The topological product structure of systems of Lebesque spaces.
Jan J. Dijkstra, University of Alabama
Jerzy Mogilski*, Bradley University
(8645469)

8:30 a.m.
On topological R^4bundles.
Duane Randall*, Loyola University
(8645598)

8:45 a.m.
Gysin sequence in intersection cohomology.
Martin Saralegi*, University of Illinois, UrbanaChampaign
Gilbert Hector, Universit\'e ClaudeBernard, France
(8645545)

9:00 a.m.
A natural decomposition for secondorder stationary random fields.
Ray Cheng*, University of Louisville
(86460124)

9:15 a.m.
UMVU estimators for bivariate families.
Kandasamy Selvavel*, Claflin College
(8646274)

9:30 a.m.
A unimodal hazard rate and its failure distribution functions.
Michael Greenwich*, Purdue University, Calumet Campus
(8646201)

9:45 a.m.
GromovHausdorff convergence to nonmanifolds.
Teresa Engel Moore*, Ithaca College
(86453123)

Saturday March 16, 1991, 8:30 a.m.9:50 a.m.
Special Session on Model Theory, II
Room 09, Northside Hall

8:30 a.m.
A remark on the cohomology of locally finite groups.
Alexandre V. Borovik*, University of California, Irvine
(8640368)

9:00 a.m.
A proof of Vaught's conjecture for varieties.
B. Hart*, McMaster University
S. Starchenko, McMaster University,
M. Valeriote, McMaster University
(8640384)

9:30 a.m.
Definable properties of sets and elimination of imaginaries.
Jan Hutson*, University of Illinois, UrbanaChampaign
(8640381)

Saturday March 16, 1991, 10:00 a.m.10:50 a.m.
Invited Address
Questions relating Riemannian geometry and the topology of 3manifolds.
Room 113, Northside Hall
Deane Yang*, Columbia University
(86416120)

Saturday March 16, 1991, 12:30 p.m.1:20 p.m.
Invited Address
Dynamics and symmetry: Explanation of paradoxes from statistics, voting, and economics.
Room 113, Northside Hall
Donald G. Saari*, Northwestern University
(86458132)

Saturday March 16, 1991, 2:00 p.m.4:20 p.m.
Special Session on Mathematical Economics and Dynamical Systems, IV
Room 01, Northside Hall

2:00 p.m.
Core and equilibria in economies with a continuum of agents and commodities.
Nicholas C. Yannelis*, University of Illinois, UrbanaChampaign
(8649024)

2:30 p.m.
Existence of Radner equilibrium with a continuum of states.
Andreu MasColell, Harvard University
William R. Zame*, Johns Hopkins University, Baltimore
(8649050)

3:00 p.m.
Equilibria in double auctions.
Steven R. Williams*, Northwestern University
(86490137)

3:30 p.m.
Special alphalimit point for mappings of the interval.
Michael W. Hero*, Bradley University
(8649078)

4:00 p.m.
Informal Discussion

Saturday March 16, 1991, 2:00 p.m.3:50 p.m.
Special Session on Simplicial Complexes Associated to Finite Groups and their Representations, III
Room 106, Northside Hall

2:00 p.m.
A general homotopy complementation formula.
Anders Bj\"orner*, Royal Institute of Technology, Sweden
(86405131)

2:30 p.m.
Order analogues and Betti polynomials.
Lynne M. Butler*, Princeton University
(8640694)

3:00 p.m.
The topology of posets and its orbit posets.
Volkmar Welker*, University of Erlangen, Federal Republic of Germany
(8642076)

3:30 p.m.
Informal Discussion

Saturday March 16, 1991, 2:00 p.m.3:20 p.m.
Special Session on Model Theory, III
Room 09, Northside Hall

2:00 p.m.
Stable actions of periodic abelian groups on abelian groups.
Andreas Baudisch*, Karl Weiserstrass Institute, German Democratic Republic
(86403110)

2:30 p.m.
Prime existentially complete commutative rings.
Dan Saracino*, Colgate University
(8640387)

3:00 p.m.
Reducts of structures over R.
Ya$'$acov Peterzil*, University of California, Berkeley
(8640386)

Saturday March 16, 1991, 2:00 p.m.3:50 p.m.
Special Session on Geometric Topology, IV
Room 06, Northside Hall

2:00 p.m.
The group NK_0(Zpi) is a Noetherian M_1module if pi is a finite group.
Frank X. Connolly, University of Notre Dame
M\'ario Da Silva*, Indiana University, South Bend, and University of Federal Fluminense, Brazil
(86455122)

2:30 p.m.
Algebraic Ltheory assembly.
Andrew A. Ranicki*, Edinburgh University, Scotland
(8645777)

3:00 p.m.
Hochschild homology traces and an nparameter Lefschetz fixed point theorem.
Ross Geoghegan*, State University of New York, Binghamton
Andrew Nicas, McMaster University
(8645789)

3:30 p.m.
Informal Discussion

Saturday March 16, 1991, 2:00 p.m.4:20 p.m.
Special Session on Algebraic Topology, III
Room 08, Northside Hall

2:00 p.m.
The fibre of secondary suspension.
B. Gray, University of Illinois, Chicago
M. Mahowald, Northwestern University
R. Thompson*, Northwestern University
(8645511)

2:30 p.m.
A Hopf type construction for iterated loop spaces.
Michael Slack*, University of Virginia
Frank Williams, New Mexico State University, Las Cruces
(8645505)

3:00 p.m.
Higher Reidemeister torsion and parametrized Morse theory.
John R. Klein*, University of Siegen, Federal Republic of Germany
(86457107)

3:30 p.m.
ZcapSIGMA_*Hopf algebras and unstable homotopy classes of maps.
Christopher Stover*, University of Chicago
(8645512)

4:00 p.m.
Functors of homotopy groups and composite functors.
David Blanc*, Northwestern University
Christopher Stover, University of Chicago
(8645504)

Saturday March 16, 1991, 2:00 p.m.3:20 p.m.
Special Session on Noncommutative Ring Theory, IV
Room 05, Northside Hall

2:00 p.m.
A Galois correspondence for modules over Hopf algebras.
Jeffrey Bergen*, DePaul University
(86416115)

2:30 p.m.
Nonabelian group actions and the Connes spectrum.
James Osterburg*, University of Cincinnati
D. S. Passman, University of Wisconsin, Madison
(86416105)

3:00 p.m.
A Connes spectrum for Hopf algebras.
James Osterburg, University of Cincinnati
D. S. Passman, University of Wisconsin, Madison
Declan Quinn*, Syracuse University
(86416103)

Saturday March 16, 1991, 2:00 p.m.4:20 p.m.
Special Session on Hilbert Spaces of Analytic Functions, IV
Room 107, Northside Hall

2:00 p.m.
Cyclic and chaotic properties of composition operators.
Paul S. Bourdon, Washington & Lee University
Joel H. Shapiro*, Michigan State University
(8644731)

2:30 p.m.
Hermitian geometry of invariant subspaces.
Keren Yan*, Indiana UniversityPurdue University, Indianapolis
(8644743)

3:00 p.m.
The commutant of multiplication by z on the closure of polynomials in L^t(mu).
Robert Olin*, Virginia Polytechnic Institute and State University
Liming Yang, Virginia Polytechnic Institute and State University
(8644780)

3:30 p.m.
Removable sets and Sobolev spaces.
Robert Kaufman*, University of Illinois, UrbanaChampaign
(8643034)

4:00 p.m.
A space of analytic functions.
Thomas L. Kriete, III*, University of Virginia
(8644657)

Saturday March 16, 1991, 2:00 p.m.4:50 p.m.
Special Session on Probability and Prediction Theory, IV
Room 013, Northside Hall

2:00 p.m.
On the law of large numbers for the bootstrap mean.
S\'andor Cs\"org\H o*, University of Michigan, Ann Arbor
(8646046)

2:30 p.m.
Inequalities for partial sums of multidimensional arrays of independent random vectors.
Nasrollah Etemadi*, University of Illinois, Chicago
(8646065)

3:00 p.m.
Marcinkiewicz strong laws of large numbers for random fields in Banach spaces.
Robert L. Taylor*, University of Georgia
(8646040)

3:30 p.m.
Some strong laws of large numbers for sums of random elements.
Andr\'e Adler, Illinois Institute of Technology
Andrew Rosalsky*, University of Florida
Robert L. Taylor, University of Georgia
(8646028)

4:00 p.m.
Almost sure limit theorems for normalized sums of random variables.
Andre Adler*, Illinois Institute of Technology
(8646044)

4:30 p.m.
Symmetry groups for random vectors.
Mark M. Meerschaert*, Albion College
(8646017)
Inquiries: meet@ams.org

