AMS Meeting Program by Day
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Program 
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1991 Joint Mathematics Meetings
San Francisco, CA, January 1619, 1991
Meeting #863
Associate secretaries:
Andy R Magid, AMS amagid@ou.edu
Kenneth A Ross, MAA ross@math.uoregon.edu
Friday January 18, 1991

Friday January 18, 1991, 7:00 a.m.9:50 a.m.
AMSMAA Special Session on Research in Undergraduate Mathematics Education, IV

7:00 a.m.
Students' conceptions of infinity in the calculus.
Gontran Ervynck*, Catholic University, Leuven, Belgium
(86398231)

7:30 a.m.
A Krutetskiian perspective on and cognitive obstacles to the learning of calculus.
F. Alexander Norman*, University of North Carolina, Charlotte
Mary Kim Prichard, University of North Carolina, Charlotte
(86398147)

8:00 a.m.
Calculus courses and their conceptual residue.
Shlomo Vinner*, Hebrew University, Isreael
(86398580)

8:30 a.m.
Research in calculus learning: Understanding of limits, derivatives, and integrals.
Joan FerriniMundy*, University of New Hampshire
Karen Graham, University of New Hampshire
(86398197)

9:00 a.m.
Informal Discussion

Friday January 18, 1991, 7:00 a.m.9:50 a.m.
AMSMAA Special Session on Mathematics and Education Reform, II

7:00 a.m.
Successful mathematics programs at the University of Texas at Austin.
Michael Starbird*, University of Texas, Austin
(86398526)

7:30 a.m.
Mr. Pythagoras goes to Hollywood.
Tom M. Apostol*, California Institute of Technology
(86397226)

8:00 a.m.
Calculus reform: Changing students' perceptions of mathematics from mimicing to thinking.
Deborah Hughes Hallett*, Harvard University
(86398860)

8:30 a.m.
The San Antonio prefreshman engineering program: A mathematics based minority intervention program.
Manuel Berriozabal*, University of Texas, San Antonio
(8639751)

9:00 a.m.
Mathematics education reform: Hard lessons learned well.
Shirley A. Hill*, University of Missouri, Kansas City
(86398834)

9:30 a.m.
Can mathematicians be involved in education and still survive in the profession?
Harvey B. Keynes*, University of Minnesota, Minneapolis
(86398178)

Friday January 18, 1991, 7:00 a.m.9:50 a.m.
AMS Special Session on Computing Optimal Geometries, II

7:00 a.m.
Generalized motion by mean curvature.
Lawrence Evans*, University of California, Berkeley
Joel Spruck, University of Massachusetts, Amherst
(86349230)

7:30 a.m.
Computing the motion of curves and surfaces via the HamiltonJacobi level set approach: I.
James A. Sethian*, University of California, Berkeley
(86368293)

8:00 a.m.
Computing the motion of curves and interfaces via the HamiltonJacobi level set approach,II.
Stanley Osher*, University of California, Los Angeles
(86365229)

8:30 a.m.
Computation of evolving phase interfaces with GibbsThompson effect.
Robert F. Almgren*, New York UniversityCourant Institute of Mathematical Sciences
(86349332)

9:00 a.m.
The deformation of crystals modeled by nonconvex variational principles.
Mitchell Luskin*, University of Minnesota, Minneapolis
Charles Collins, University of Michigan, Ann Arbor
(86365184)

9:30 a.m.
Soap films and immiscible fluids.
Gary R. Lawlor, Princeton University
Frank Morgan*, Williams College
(86349194)

Friday January 18, 1991, 7:00 a.m.9:50 a.m.
AMS Special Session on Arithmetical Algebraic Geometry, II

7:00 a.m.
On Euler systems.
Dinakar Ramakrishnan*, California Institute of Technology
(86311301)

7:30 a.m.
Algebraic cycles in families of abelian varieties over HilbertBlumenthal surfaces.
B. Brent Gordon*, University of Oklahoma
(86311538)

8:00 a.m.
Representations of integers by certain quaternary quadratic forms.
Isabelle Pays*, University of Washington
(86311291)

8:30 a.m.
Height pairing of higher dimensional cycles and the heat kernel.
Bruno Harris*, Brown University
(86311873)

9:00 a.m.
Average values of Lfunctions in function fields.
Michael Rosen*, Brown University
(86311180)

9:30 a.m.
A family of cyclic quartic fields arising from modular curves.
Lawrence C. Washington*, University of Maryland, College Park
(86311233)

Friday January 18, 1991, 7:00 a.m.9:50 a.m.
AMS Special Session on Real Algebraic Geometry, III

7:00 a.m.
Robinson's form and Hilbert's theorem.
Bruce Reznick*, University of Illinois, UrbanaChampaign
(86314874)

7:30 a.m.
Witt rings under odd degree extensions.
Robert W. Fitzgerald*, Southern Illinois University, Carbondale
(86311183)

8:00 a.m.
Quaternion identities.
Joseph Yucas*, Southern Illinois University, Carbondale
(86312373)

8:30 a.m.
Pro2Demuskin groups of rank aleph_0 as Galois groups of maximal 2extensions of fields.
Jan Minac, University of Western Ontario
Roger Ware*, Pennsylvania State University, University Park
(86312281)

9:00 a.m.
Witt rings and Galois groups.
Tara L. Smith*, Ohio State University, Columbus
(86312283)

9:30 a.m.
Stable decompositions of division algebras with involution.
Maurice Chacron, Carleton University
H\'el\`ene Dherte, University Catholique de Louvain, Belgium
JeanPierre Tignol*, University Catholique de Louvain, Belgium
Adrian Wadsworth, University of California at San Diego, La Jolla
(86316381)

Friday January 18, 1991, 7:00 a.m.9:00 a.m.
MAA Minicourse \#12: Part A
Writing in mathematics courses
Organizers:
George D. Gopen, Duke University
David A. Smith, Duke University

Friday January 18, 1991, 7:00 a.m.9:00 a.m.
MAA Minicourse \#7: Part B
Symmetry analysis of repeated patterns
Organizers:
Donald W. Crowe, University of Wisconsin, Madison

Friday January 18, 1991, 7:00 a.m.9:00 a.m.
MAA Minicourse \#8: Part B
The theory and application of discrete dynamics
Organizers:
James T. Sandefur, Georgetown University

Friday January 18, 1991, 7:00 a.m.9:00 a.m.
MAA Minicourse \#9: Part B
Combinatorial designs
Organizers:
Walter D. Wallis, Southern Illinois University

Friday January 18, 1991, 7:00 a.m.9:55 a.m.
AMS Session on Complex Analysis, I

7:00 a.m.
Square iterable univalent functions.
Kent Pearce*, Texas Tech University
(86330169)

7:15 a.m.
Distance decreasing functions.
H. S. Bear*, University of Hawaii, Honolulu
(86330251)

7:30 a.m.
On the valence of some classes of harmonic maps.
Abdallah Lyzzaik*, Kuwait University, Kuwait
(8633011)

7:45 a.m.
On factorization of entire functions satisfying differential equations.
ChungChun Yang*, Hong Kong University of Science and Technology, Hong Kong
H. Urabe, Kyoto University, Japan
(86330140)

8:00 a.m.
Green's function as an interpolating tool.
Ahmed I. Zayed*, University of Central Florida
(86330161)

8:15 a.m.
Inner chordarc domains.
Manouchehr Ghamsari*, University of Cincinnati
(86330186)

8:30 a.m.
Euclidean linear invariance and uniform local convexity.
Wancang Ma*, University of Cincinnati
David Minda, University of Cincinnati
(86330196)

8:45 a.m.
Distortion theorems for euclidean kconvex functions.
Wancang Ma, University of Cincinnati
Diego Mejia, Universidad Nacional de Medellin, Colombia
David Minda*, University of Cincinnati
(86330400)

9:00 a.m.
On uniformly convex functions.
A. W. Goodman*, University of South Florida
(86330198)

9:15 a.m.
A sum over the zeros of partial sums of e^x.
C. Yalcin Yildirim*, Bilkent University, Turkey
(86330244)

9:30 a.m.
Extremal distance and estimates of harmonic measure applied to conformal mapping.
Thomas K. DeLillo*, Wichita State University
John A. Pfaltzgraff, University of North Carolina, Chapel Hill
(86330284)

Friday January 18, 1991, 7:00 a.m.9:55 a.m.
AMS Session on Orders and Lattices

7:00 a.m.
A variety of latticeordered groups containing all representable covers of the abelian variety.
M. Anderson, Colorado College
M. Darnel, Indiana University, South Bend
T. Feil*, Denison University
(86306426)

7:15 a.m.
Knowledge approximation algebras.
Stephen D. Comer*, The Citadel
(86306235)

7:30 a.m.
Tilings with the neighborhood property.
Linda Fosnaugh*, University of Nebraska, Lincoln
(86305453)

7:45 a.m.
Graph product and covering graphs.
Ghidewon Abay Asmerom*, Western Michigan University
(86305468)

8:00 a.m.
The lower half of the partition lattice is Sperner.
Joseph P.S. Kung*, University of North Texas
(86306287)

8:15 a.m.
Order, genus, and diagram invariance.
Kevin Ewacha*, University of Ottawa
Weixuan Li, University of Ottawa
Ivan Rival, University of Ottawa
(86306349)

8:30 a.m.
Sums of semiprime, z and d lideals.
Suzanne Larson*, Loyola Marymount University
(86306405)

8:45 a.m.
On generalized partitions and posets.
ZhuXin Hu*, University of Illinois, UrbanaChampaign
(86306424)

9:00 a.m.
When is every order ideal a ring ideal?
M. Henriksen*, Harvey Mudd College
(86306579)

9:15 a.m.
Sums of lattice homomorphisms.
S. J. Bernau*, University of Texas, El Paso
C. B. Huijsmans, University of Leiden, The Netherlands
B. dePagter, Delft University of Technology, The Netherlands
(86306600)

9:30 a.m.
On epicompletions of Archimedian latticeordered groups.
Ann Kizanis*, Wesleyan University
(86306767)

9:45 a.m.
On generalized perfect graphs: Inverting perfection.
Ann N. Trenk*, Johns Hopkins University, Baltimore
(86305330)

Friday January 18, 1991, 7:00 a.m.9:55 a.m.
AMS Session on Algebra, II

7:00 a.m.
Chains of subgroups in Lie type groups.
Douglas Brozovic*, Ohio State University, Columbus
(86320145)

7:15 a.m.
Automorphisms of skew polynomial rings.
Mary Rosen*, California State University, Northridge
Jerry Rosen, California State University, Northridge
(86316126)

7:30 a.m.
Derivations of differential operator rings.
Jerry Rosen*, California State University, Northridge
Mary Rosen, California State University, Northridge
(86316125)

7:45 a.m.
Global dimensions of rings with Krull dimension.
John Koker*, State University of New York, College at Potsdam
(86317674)

8:00 a.m.
Braiding structure on A(R).
Jacob Towber*, DePaul University
(86320740)

8:15 a.m.
The preservation of the semiprime Goldie property by strong semilattice sums.
YueChan P. Ho*, University of Iowa
(86320498)

8:30 a.m.
Simple algebras, graphs, and projective planes.
Joseph Rotman*, University of Illinois, UrbanaChampaign
(86317522)

8:45 a.m.
Root multiplicities of the hyperbolic KacMoody algebra HA_1^(1).
SeokJin Kang*, North Carolina State University
(86317396)

9:00 a.m.
Results on subspace products in KacMoody algebras.
Phyllis E. Singer*, University of Missouri, Rolla
(86317387)

9:15 a.m.
Rank stability of weight multiplicities in classical affine Lie algebras.
Steven N. Kass*, Drew University
(86317329)

9:30 a.m.
On simple rings with commutators in the left nucleus.
Erwin Kleinfeld*, University of Iowa
Harry F. Smith, University of New England, Australia
(86317116)

9:45 a.m.
Cyclic cocycles on a dilation of a preFredholm module to a Fredholm module.
Jacek Brodzki*, University of Texas, Austin
(86318431)

Friday January 18, 1991, 7:00 a.m.9:55 a.m.
MAA Session on Alternatives to the Lecture Method, I

7:00 a.m.
Statistics, an alternative approach.
Gail Kaplan*, Washington College

7:20 a.m.
Using small group collaborative instruction: Some tips for getting started.
Julian Weissglass*, University of California, Santa Barbara

7:40 a.m.
The use of cooperative learning in upper division geometry.
Dorothy J. Williams*, Portland State University

8:00 a.m.
Alternative methods in teaching geometry.
Martha K. Smith*, University of Texas, Austin

8:20 a.m.
Writing and speaking to learn geometry.
Nadine Myers*, Hamline University

8:40 a.m.
Student writes to a student centered classroom.
Coreen Mett*, Radford University

9:00 a.m.
Small group discussions and manipulatives for college math classes.
Phyllis Chinn*, Humboldt State University

9:20 a.m.
Group problem solving in the calculus classroom.
Susann M. Mathews*, Miami University, Middletown

9:40 a.m.
Getting more from Moore.
G. Edgar Parker*, James Madison University

Friday January 18, 1991, 7:00 a.m.8:20 a.m.
MAA Session
Environmental modeling
Organizers:
Ben Fusaro, Salisbury State University
Speakers:
Roland H. Lamberson, Humboldt State University
Roy B. Leipnik, University of California, Santa Barbara
Robert W. McKelvey, University of Montana

Friday January 18, 1991, 7:00 a.m.9:55 a.m.
MAA Committee on Student Chapters Workshop: Part B
Chaos, fractals, and dynamics\endash Computer experiments in mathematics
Organizers:
Marilyn Durkin, Bentley College

Friday January 18, 1991, 7:00 a.m.8:20 a.m.
MAA Women and Mathematics Session
WAM: Yesterday, today and tomorrowIn commemoration of WAM's 15 years of service
Alice Kelly,

Friday January 18, 1991, 7:00 a.m.9:55 a.m.
NAM Contributed Paper Session
Presentations by recent doctoral recipients

Friday January 18, 1991, 7:05 a.m.9:40 a.m.
MAA Session on Statistics and Probability, I

7:05 a.m.
Using spreadsheets in teaching statistics.
Deane E. Arganbright*, Whitworth College

7:25 a.m.
Statistics in secondary schools: The quantitative literacy project.
Ann E. Watkins*, California State University, Northridge

7:45 a.m.
The role of the computer in teaching probability and statistics.
J. Laurie Snell*, Dartmouth College
William Peterson, Middlebury College

8:05 a.m.
Computer graphics and simulations in teaching statistics.
Henry Krieger, Harvey Mudd College
James PinterLucke*, ClaremontMcKenna College

8:25 a.m.
Getting more data into applied statistics courses.
Robin H. Lock*, St. Lawrence University

8:45 a.m.
Getting more data into theoretical statistics courses.
Thomas L. Moore*, Grinnell College

9:05 a.m.
An introductory statistics course: The nonparametric way.
Gottfried E. Noether*, University of Connecticut, Storrs

9:25 a.m.
Computer graphics simulations in statistics.
Florence S. Gordon, New York Institute of Technology
Sheldon P. Gordon*, Suffolk Community College

Friday January 18, 1991, 7:05 a.m.9:50 a.m.
MAA Session on Using History in the Teaching of Mathematics, I

7:05 a.m.
Great problems of mathematics: A course based on original sources.
Reinhard C. Laubenbacher*, New Mexico State University, Las Cruces
David J. Pengelley, New Mexico State University, Las Cruces

7:30 a.m.
History from three viewpoints.
Gary L. McGrath*, Pittsburg State University

7:45 a.m.
The history of mathematics and philosophy.
James W. Petticrew*, University of TexasPan American

8:00 a.m.
A writing intensive history of mathematics course.
John F. Berglund*, Virginia Commonwealth University

8:15 a.m.
History of mathematics: A timehopping, problemsolving approach with maple flavoring.
David Graves*, Elmira College

8:30 a.m.
A graduate course in the history of mathematics as the cornerstone of a teacher training program.
David Knee*, Hofstra University

8:45 a.m.
History of mathematics: A graduate survey course at Penn State.
John W. Dawson, Jr.*, Pennsylvania State University, York

9:00 a.m.
Hilbert's problems, and a play based on them.
Marjorie Senechal*, Smith College

9:25 a.m.
Using Hilbert's problems to teach history.
Sharon Kunoff*, Long Island University, C.W. Post Campus

9:40 a.m.
The problem of points as a case study in problem solving.
David E. Kullman*, Miami University, Oxford

Friday January 18, 1991, 8:00 a.m.8:50 a.m.
AMS Invited Address

Friday January 18, 1991, 8:30 a.m.9:55 a.m.
MAA Committee on the Undergraduate Program in Mathematics Panel Discussion
Undergraduate curriculum initiatives: From ideas to action
Lynn A. Steen,

Friday January 18, 1991, 8:30 a.m.9:55 a.m.
MAA CUPM Subcommittee on Undergraduate Research in Mathematics Panel Discussion
Models for undergraduate research
Lester J. Senechal,

Friday January 18, 1991, 9:05 a.m.9:55 a.m.
AMS Committee on Science Policy Government Speaker

Friday January 18, 1991, 10:10 a.m.11:00 a.m.
AMSMAA Invited Address
Characteristic forms.
Shiing S. Chern*, University of California, Berkeley

Friday January 18, 1991, 11:00 a.m.12:00 p.m.
National Science Foundation Informal Discussion Group on Research

Friday January 18, 1991, 12:00 p.m.1:00 p.m.
AMS Colloquium Lecture: Lecture III
Title to be announced.
Robert D. MacPherson*, Massachusetts Institute of Technology

Friday January 18, 1991, 12:00 p.m.3:20 p.m.
AMSMAA Special Session on Mathematics and Education Reform, III: Perspectives on the Roles of Research Mathematicians in Education Reform

12:00 p.m.
Introduction

12:15 p.m.
Some observations from 30 years experience in mathematics education.
Andrew Gleason*, Harvard University
(86398859)

12:35 p.m.
A program for high school teachers on mathematics and its applications.
Deborah Tepper Haimo*, University of Missouri, St.\ Louis
(86398290)

12:55 p.m.
Understanding misunderstandings in mathematics.
Leon Henkin*, University of California, Berkeley
(86398508)

1:15 p.m.
Educational reform and the professional societies.
William Jaco*, American Mathematical Society, Providence, Rhode Island
(86398870)

1:35 p.m.
Mathematical education from Kindgergarten through the University.
William P. Thurston*, Princeton University
(86398690)

1:55 p.m.
Education and the research community.
Michael Reed*, Duke University
(86398554)

2:05 p.m.
National goals and agenda
Ray C. Shiflett*, Mathematical Sciences Education Board, Washington, DC
(86398774)

2:15 p.m.
Fostering the involvment of researchers in educationoriented programs.
Judith S. Sunley*, National Science Foundation
(86398839)

2:25 p.m.
Symposium on perspective on the roles of research mathmaticians and education reform.
Marcia P. Sward*, The Mathematical Association of America
(86398798)

2:35 p.m.
Faculty roles in recruiting mathematics majors.
Uri Treisman*, Swarthmore College
(86398555)

2:45 p.m.
Discussion

Friday January 18, 1991, 12:00 p.m.3:20 p.m.
AMSMAA Special Session on Research Papers by Undergraduates, I

12:00 p.m.
Bootstrapping in principal component analysis.
Laura K. Gross*, Yale University
Vivek K. Goyal, State University of Iowa
Marcel R. Grenier, Eastern Connecticut State University
S. Jane Henley, Mount Holyoke College
Janice Gifford, Mount Holyoke College
(86362694)

12:30 p.m.
Exceptional lines and curvature of algebraic surfaces in C^3.
Chrissie Beaber, Mount Holyoke College
Eileen Cheng, Mount Holyoke College
Brendan Hassett*, Yale University
Gwen Lloyd, Bryn Mawr College
Donal O'Shea, Mount Holyoke College
Rebecca Runnels, College of the Holy Cross
(86314692)

1:00 p.m.
Some facts about CWATsets.
Martin Wattenberg*, Brown University
(86320693)

1:30 p.m.
Splitting of the characteristic polynomial of certain structured matrices, and information requirements for the determination of the inverse of an n x n persymmetric matrix.
Samuel Ferguson*, Brigham Young University
Charles R. Johnson, College of William and Mary
Tamir Shalom, Columbia University
(86315361)

2:00 p.m.
Reliability of consecutive systems.
Hope McIlwain*, Furman University
Douglas Shier, College of William and Mary
(86305838)

2:30 p.m.
Pebbling graphs.
David Moews*, University of California, Berkeley
(86305432)

3:00 p.m.
Existence, uniqueness and connectivity of sets generated by finite and infinite iterated function systems.
Stephanie Wukovitz*, Pennsylvania State University, University Park
(86358771)

Friday January 18, 1991, 12:00 p.m.3:20 p.m.
AMS Special Session on Computing Optimal Geometries, III

12:00 p.m.
The opaque cube problem.
Kenneth Brakke*, Susquehanna University
(86349129)

12:30 p.m.
Threedimensional fluid interfaces in a cylindrical container.
James Tegart*, Martin Marietta Astronautics, Denver, Colorado
(86376236)

1:00 p.m.
Energy minimizing capillary surfaces for exotic containers.
Michael Callahan, Harvard University
Paul Concus*, Lawrence Berkeley Laboratory and University of California, Berkeley
Robert Finn, Stanford University
(86368203)

1:30 p.m.
Computing minimal surfaces with and without conformal representation.
David Hoffman*, University of Massachusetts, Amherst
(86353437)

2:00 p.m.
New methods for existence of minimal hypersurfaces.
Jon T. Pitts*, Texas A\thsp\&\thsp M University, College Station
(86349331)

2:30 p.m.
Numerical approximation of areaminimizing hypersurfaces.
Harold R. Parks*, Oregon State University
(86368299)

3:00 p.m.
Crystalline approximation: Computing minimum surfaces with maximum flows.
John M. Sullivan*, Minneapolis, Minnesota
(86351314)

Friday January 18, 1991, 12:00 p.m.3:20 p.m.
AMS Special Session on Geometric Fourier Analysis, I

12:00 p.m.
Comparison theorems for P.D.E.'s on tori.
Albert Baernstein, II*, Washington University
(86335144)

12:30 p.m.
Weakly elliptic systems with obstacle constraints.
David R. Adams*, University of Kentucky
(86335112)

1:00 p.m.
Conformally invariant inequalities and conformally covariant differential operators.
Thomas P. Branson*, University of Iowa
(86353363)

1:30 p.m.
Sobolev inequality of MoserTrudinger type.
SunYung Alice Chang*, University of California, Los Angeles
(86342170)

2:00 p.m.
Kparameter Fourier analysis.
Elias M. Stein*, Princeton University
(86342641)

2:30 p.m.
Sharp constants for the Fourier transform and other Gaussian kernels.
Elliott H. Lieb*, Princeton University
(86342146)

3:00 p.m.
Sobolev inequalities and conformal geometry.
Jose F. Escobar*, Indiana University, Bloomington
(86353628)

Friday January 18, 1991, 12:00 p.m.3:20 p.m.
AMS Special Session on Nonlinear Control Theory and Related Topics, I

12:00 p.m.
Stabilization and control of nonlinear systems with constraints.
Anthony M. Bloch*, Ohio State University, Columbus
(86393364)

12:30 p.m.
Inputoutput differential equations and realizations of nonlinear control systems.
Peter Crouch*, Arizona State University
Francoise LamnabhiLagarrigue, CNRS Laboratoire, GifsurYvette, France
(86393513)

1:00 p.m.
Controllability of the holonomy of a system of two symmetric rigid bodies in 3space.
Michael J. Enos*, Saint Lawrence University
(8634994)

1:30 p.m.
Motion planning and nilpotent Lie algebras of vector fields.
Gerardo Lafferriere*, Portland State University
Hector Sussmann, Rutgers University, New Brunswick
(86393266)

2:00 p.m.
A dynamical systems approach to control.
Wolfgang Kliemann*, Iowa State University
(86393264)

2:30 p.m.
Asymptotic feedback stabilization.
Matthias Kawski*, Arizona State University
(86393633)

3:00 p.m.
Smalltime local controllability and normal selfreachability.
Kevin A. Grasse*, University of Oklahoma
(86393267)

Friday January 18, 1991, 12:00 p.m.3:20 p.m.
AMS Special Session on Analytical Methods in Convexity, I

12:00 p.m.
Asymptotic Banach  Mazur approximation of convex bodies.
Peter M. Gruber*, Vienna Technical University, Austria
(86352152)

12:30 p.m.
Probability and convexity.
R. A. Vitale*, University of Connecticut, Storrs
(86352786)

1:00 p.m.
Relatives of the Petty projection in equality.
Erwin Lutwak*, Polytechnic University of New York
(86352549)

1:30 p.m.
Polarity for nonconvex surfaces and generalized envelopes.
Vladimir Oliker*, Emory University
(86352115)

2:00 p.m.
Constant width in Riemannian spaces.
Boris V. Dekster*, Mount Allison University
(8635265)

2:30 p.m.
Three (probably) identical classes of convex bodies.
G. T. Sallee*, University of California, Davis
(86352760)

3:00 p.m.
On the number of antipodal and strictly antipodal point pairs in finite subsets of R^d.
Horst Martini*, Mathematics Institute, German Democratic Republic
E. Makai, Budapest, Hungary
(86352858)

Friday January 18, 1991, 12:00 p.m.2:20 p.m.
AMS Special Session on Matrix Searching, Monge Arrays and Ackemann's Inverse: Algorithms and Lower Bounds, I

12:00 p.m.
Applications of array searching to economic lotsized models.
Alok Aggarwal*, IBM Research Division, Yorktown Heights, New York
(86368809)

12:30 p.m.
Compact storage of nonadaptive routing tables.
Baruch Schieber*, IBM T. J. Watson Research Center, Yorktown Heights, New York
(86368808)

1:00 p.m.
Two algorithms for selecting the kth smallest entry in each row of a Monge array.
James Park*, Massachusetts Institute of Technology
(86368807)

1:30 p.m.
Seriesparallel graphs, Monge arrays and greedy linear.
Alan Hoffman*, IBM T. J. Watson Research Center, Yorktown Heights, New York
(86368806)

2:00 p.m.
Staircase transportation problems with superadditive rewards and cumulative capacities.
Arthur F. Veinott, Jr.*, IBM Almaden Research Center, San Jose, California and Stanford University
(86368805)

Friday January 18, 1991, 12:00 p.m.1:50 p.m.
AMS Special Session on Hopf Algebras, IV

12:00 p.m.
Some remarks on duality.
Robert J. Blattner*, University of California, Los Angeles
(86316651)

12:30 p.m.
Hopf algebras applied to representation theory.
Davida Fischman*, Weizmann Institute of Science, Israel
(8631661)

1:00 p.m.
A Connes spectrum for Hopf algebras.
James Osterburg*, University of Cincinnati
D. S. Passman, University of Wisconsin, Madison
Declan Quinn, Syracuse University
(8631616)

1:30 p.m.
Hopf algebras and categories.
K.H. Ulbrich*, Universit\'e of ParisNord, France
(86316862)

Friday January 18, 1991, 12:00 p.m.3:20 p.m.
AMS Special Session on Arithmetical Algebraic Geometry, III

12:00 p.m.
Solutions to certain families of Thue forms.
P. Emery Thomas*, University of California, Berkeley
(86311163)

12:30 p.m.
An explicit proof of BrumerStark over F_q(T).
Greg Anderson*, California Institute of Technology
(86311237)

1:00 p.m.
Harmonic analysis and the flow of a Drinfeld module.
David Goss*, Ohio State University, Columbus
(86312120)

1:30 p.m.
Modular symbols for function fields.
Jeremy Teitelbaum*, University of Illinois, Chicago
(86311192)

2:00 p.m.
The arithmetic of the Jacobian of a Fermat curve.
William G. McCallum*, University of Arizona
(86311744)

2:30 p.m.
Heights of projective varieties and an arithmetic Bezout theorem.
Henri Gillet*, University of Illinois at Chicago
(86314171)

3:00 p.m.
The ThueSiegelDysonGel'fondRothWirsing and MordellFaltings theorems, both under the same roof.
Paul Vojta*, University of California, Berkeley
(86314134)

Friday January 18, 1991, 12:00 p.m.3:10 p.m.
AMS Session on Combinatorics, III

12:00 p.m.
Tcolorings of graphs.
Daphne D.F. Liu*, University of South Carolina, Columbia
(86305639)

12:15 p.m.
Determinants among the binomial and trinomial coefficients.
Jerrold R. Griggs, University of South Carolina, Columbia
Christine H. W. Sun*, University of South Carolina, Columbia
(86305640)

12:30 p.m.
Harmonic invariants of graphs.
Jerzy Kocik*, Southern Illinois University, Carbondale
(86305658)

12:45 p.m.
Classifying the onefactorizations of a tensor product graph.
John C. George*, University of Illinois, UrbanaChampaign
(86305663)

1:00 p.m.
The multicolored matrixtree theorem.
Allen J. Schwenk*, Western Michigan University
(86305677)

1:15 p.m.
Edgedisjoint Hamilton cycles in regular line graphs.
Siming Zhan*, Simon Fraser University
(86305687)

1:30 p.m.
The dimension of the set of multinomial coefficients not divisible by n.
John Holte*, Gustavus Adolphus College
(86305726)

1:45 p.m.
Almostouterplanar graphs.
Lawrence Wargo*, Louisiana State University, Baton Rouge
(86305728)

2:00 p.m.
Neighborhood sets in graphs.
S. R. Jayaram, JNN College of Engineering, India
Y. H. Harris Kwong, State University of New York, College at Fredonia
Joseph Straight*, State University of New York, College at Fredonia
(86305755)

2:15 p.m.
Congruence problems involving Stirling numbers of the first kind.
Rhodes Peele*, Auburn University, Montgomery
Herbert Wilf, University of Pennsylvania
(86305811)

2:30 p.m.
Degree sums, neighborhood unions and matching extension in graphs.
M. D. Plummer*, Vanderbilt University
(86305830)

2:45 p.m.
The threshold weight of a graph.
Chi Wang*, Rutgers University, New Brunswick
A. C. Williams, Rutgers University, New Brunswick
(86305869)

3:00 p.m.
The complexity of graphs Hamiltonianconnected from a vertex.
Alice M. Dean*, Skidmore College
(86305285)

Friday January 18, 1991, 12:00 p.m.3:10 p.m.
AMS Session on Complex Analysis, II

12:00 p.m.
Quasiregular mappings and Royden algebras.
Nathan R. Soderborg*, University of Michigan, Ann Arbor
(86330303)

12:15 p.m.
Quasiextremal distance domains.
Shanshuang Yang*, University of Michigan, Ann Arbor
(86330304)

12:30 p.m.
On the coefficient problem for the Schwarzian derivative.
Stephen M. Zemyan*, Pennsylvania State University, Mont Alto Campus
(86330390)

12:45 p.m.
On Korenblum's maximum principle for the Bergman space.
Kendall Richards*, Texas Tech University
(86330469)

1:00 p.m.
Twist points of a simply connected domain.
John Marafino*, James Madison University
(86330519)

1:15 p.m.
The norm of p'(z) in terms of the norm of p(z).
Robert Gardner*, Auburn University, Auburn
(86330529)

1:30 p.m.
Projective structure of Fuchsian groups.
Jharna Sengupta*, Elizabeth City State University
(86330567)

1:45 p.m.
The order of a function and the twin prime conjecture.
Badih Ghusayni*, North Central College
(86330573)

2:00 p.m.
On a subclass of uniformly starlike functions.
Mohammad Salmassi*, College of the Holy Cross
Ed Merkes, University of Cincinnati
(86330576)

2:15 p.m.
Angular limits and infinite asymptotic values of analytic functions of slow growth.
Robert Berman*, Wayne State University
(86330714)

2:30 p.m.
HardyLittlewood theorems for elliptic equations in divergence form.
Craig A. Nolder*, Florida State University
(86330735)

2:45 p.m.
Univalent functions with range of prescribed transfinite diameter.
Robin Cunningham*, University of Michigan, Ann Arbor
(86330787)

3:00 p.m.
Behavior of quasiconformal mappings at a point.
Melkana Brakalova*, Washington University
(86330790)

Friday January 18, 1991, 12:00 p.m.2:55 p.m.
AMS Session on Ordinary Differential Equations, II

12:00 p.m.
Stability of recede trajectories of dynamical systems.
Zhivko S. Athanassov*, Bulgarian Academy of Sciences, Bulgaria
(86334876)

12:15 p.m.
Disconjugacy of a selfadjoint difference equation.
Allan Peterson*, University of Nebraska, Lincoln
(86334486)

12:30 p.m.
Steadystate diffussion in a two patch nonhomogeneous environment.
J. B. Garner*, Mississippi State University
R. Shivaji, Mississippi State University
(86334480)

12:45 p.m.
Spectral analysis of second order difference equations.
Dale T. Smith*, University of North Texas
(86334476)

1:00 p.m.
Existence of solutions to first order ordinary differential equations.
Zachariah Sinkala*, Middle Tennessee State University
(86334459)

1:15 p.m.
Universality of the fine structures of onedimensional unimodal maps in the chaotic regime.
Yuzhen Ge*, Virginia Polytechnic Institute and State University
(86334427)

1:30 p.m.
Boundedness properties and perturbing Lyapunov functions.
Semen Koksal*, Florida Institute of Technology
(86334421)

1:45 p.m.
Nonlinear optimization theory with multiple objectives and dynamical systems.
John Jones, Jr.*, Air Force Institute of Technology
(86334342)

2:00 p.m.
Variation of constants formula for abstract Volterra functional differential equations.
C. Corduneanu*, University of Texas, Arlington
(86334274)

2:15 p.m.
Global behavior of solutions of a certain nth order differential equation.
T. K. Puttaswamy*, Ball State University
(86334253)

2:30 p.m.
Uniqueness of positive solutions for a semipositone problem with concave nonlinearity.
Alfonso Castro, University of North Texas
R. Shivaji*, Mississippi State University
(86335479)

2:45 p.m.
Bloch functions of several complex variables.
Xiangyang Liu*, University of Cincinnati
(8633277)

Friday January 18, 1991, 12:00 p.m.3:10 p.m.
AMS Session on Group Theory

12:00 p.m.
Groups with relatively few centralizers.
Sarah Marie Belcastro*, Haverford College
(86320655)

12:15 p.m.
Closure operations and locally constructed formations.
Mark C. Hofmann*, Skidmore College
(86320609)

12:30 p.m.
Computer examples in modular group rings.
D. B. Coleman*, University of Kentucky
(86320172)

12:45 p.m.
Recent results on the normal embedding problem.
Francis J. Flanigan*, San Jose State University
Brian L. Peterson, San Jose State University
(86320141)

1:00 p.m.
Categoricallycompact groups.
Temple H. Fay, University of Southern Mississippi
Gary L. Walls*, University of Southern Mississippi
(86320188)

1:15 p.m.
On the DenesHermann theorem: A different approach.
Peter Yff*, Ball State University
(86320256)

1:30 p.m.
Closure properties in virtually freebycyclic groups.
Sharon E. Persinger*, State University of New York, College at New Paltz
(86320306)

1:45 p.m.
An E^2 standard for computability in groups.
R. W. Gatterdam*, University of Alaska, Fairbanks
(86320423)

2:00 p.m.
Multiplicityfree permutation representations of the alternating groups.
Jose Maria P. Balmaceda*, University of Illinois, UrbanaChampaign
(86320454)

2:15 p.m.
On the structure of the representation ring of finite classical groups.
Essam A. Abotteen*, Emporia State University
(86320455)

2:30 p.m.
Some problems appearing in the theory of kcharacters of groups.
Kenneth W. Johnson*, Pennsylvania State University, Ogontz Campus
(86320463)

2:45 p.m.
The generation of hyperbolic unitary groups using the unitary analogue of GE_n(R).
Allen Hibbard*, Central College
(86320466)

3:00 p.m.
Autoprojectivities of finite doublygenerated Abelian pgroups.
Charles Holmes*, Miami University, Oxford
(86320730)

Friday January 18, 1991, 12:00 p.m.3:10 p.m.
AMS Session on Operator Theory and Analysis

12:00 p.m.
Seminormal composition operators.
James T. Campbell*, Memphis State University
William E. Hornor, University of Southern Mississippi
(86347673)

12:15 p.m.
The iterative solution of the equation f member x + T x for an accretive operator T in uniformly smooth Banach spaces.
Xinlong Weng*, Marshall University
(86347684)

12:30 p.m.
Toeplitz operators with pc symbols in weighted spaces.
Ilya M. Spitkovskii*, College of William and Mary
(86347727)

12:45 p.m.
An interpolation inequality arising in degenerate elliptic problems.
Gisele Ruiz Rieder*, Louisiana State University, Baton Rouge
J. R. Dorroh, Louisiana State University, Baton Rouge
Jerome A. Goldstein, Tulane University
(86347851)

1:00 p.m.
Representation of sum form information measures with additivity of type (alpha, beta) on open domain.
PL. Kannappan*, University of Waterloo
P. K. Sahoo, University of Louisville
(86339273)

1:15 p.m.
Parseval type theorems on Hankel transforms and their applications.
Osman Yurekli*, Ithaca College
(86344319)

1:30 p.m.
Numerical inversion of two dimensional Laplace transforms using Fourier series representations.
M. Vinayagamoorthy*, Arkansas College
(86344485)

1:45 p.m.
Error estimates and stability of Itotype systems of nonlinear stochastic integrodifferential equations.
G. S. Ladde, University of Texas, Arlington
S. Sathananthan*, Jarvis Christian College
(86345403)

2:00 p.m.
Coupled elastic and viscoelastic rods.
Wolfgang Desch, Graz University, Austria
Ronald Grimmer*, Southern Illinois University, Carbondale
(86345422)

2:15 p.m.
Constructing the Neumann series  an example.
David S. Tselnik*, North Dakota State University, Fargo
(86345871)

2:30 p.m.
Entropy of groups and subfactors.
Dietmar Bisch*, University of California, Los Angeles
(86346317)

2:45 p.m.
Central sequences of matrix units of simple C*algebras.
Bruce E. Blackadar*, University of Nevada, Reno
(86346784)

Friday January 18, 1991, 12:00 p.m.3:30 p.m.
MAA Session on Alternatives to the Lecture Method, II

12:00 p.m.
The research apprenticeship alternative to lecturing.
Kirk A. Mathews*, Air Force Institute of Technology

12:20 p.m.
Collaborative learning in calculus I.
Nancy L. Hagelgans*, Ursinus College

12:40 p.m.
A longterm exploratory project.
Richard Barshinger*, Pennsylvania State University, Dunmore

1:00 p.m.
Teachatopic.
Joanne Kossegi*, State University of New York, College at Oswego
Margaret W. Groman, State University of New York, College at Oswego

1:20 p.m.
Large calculus classes run as workshops.
Al Shenk*, University of California at San Diego, La Jolla

1:40 p.m.
Reinventing the calculus: A group experience.
Michael J. Miller*, LeMoyne College

2:00 p.m.
Engaging in mathematics.
Michael D. Taylor*, University of Central Florida

2:20 p.m.
Teamwork in undergraduate mathematics classes.
William Marion*, Valparaiso University

2:40 p.m.
A studentcentered approach to teaching college algebra.
Philip A. DeMarois*, William Rainey Harper College

3:00 p.m.
Studentcentered instruction at the college level.
Mark Eastman*,

3:20 p.m.
The art of biting your tongue.
William Miller*, LeMoyne College

Friday January 18, 1991, 12:00 p.m.3:20 p.m.
MAA CRAFTY Poster Session
Thomas W. Tucker,

Friday January 18, 1991, 12:00 p.m.1:30 p.m.
MAANAM Panel Discussion
Nurturing minority graduate students in mathematics
Organizers:
Sylvia Bozeman,

Friday January 18, 1991, 12:05 p.m.2:55 p.m.
MAA Session on Statistics and Probability, II

12:05 p.m.
Calculator enhanced probability and statistics.
Iris B. Fetta*, Clemson University

12:25 p.m.
The computer as a tool for helping to solve problems.
Elliot A. Tanis*, Hope College

12:45 p.m.
Freeing statistics courses from prerequisites: The Mount Holyoke model.
Marsha J. Davis*, Mount Holyoke College

1:00 p.m.
Using a MINITABbased lab.
Robert L. Brandon*, Eastern Oregon State College

1:15 p.m.
Statistics in a community college.
Emeric Hornick*, College of the Redwoods

1:30 p.m.
Statistics can make mathematics come alive for the liberal arts student.
Sherralyn D. Craven*, Central Missouri State University

1:45 p.m.
Defensive statistics.
Barry Brunson*, Western Kentucky University

2:00 p.m.
Liberal arts math with probability.
Kay Gura*, Ramapo College of New Jersey

2:15 p.m.
Quantative reasoning skills for liberal arts students.
Mark Bottorff*, Dickenson College
Walter Chromiak, Dickinson College
Jim Hoefler, Dickinson College
Sinan Koont, Dickinson College
Allan Rossman, Dickinson College
J. A. Skelton, Dickinson College

2:30 p.m.
Two combinatorial identities derived from the recurrence relation (n r)=(n1 r1)+(n1 r).
Diane M. Spresser*, James Madison University
Jeffrey S. Fritz, James Madison University

2:45 p.m.
The current status of the scientific calculator in computing summary statistics among grade school, high school, and college students.
John L. Stedl*, Chicago State University

Friday January 18, 1991, 12:30 p.m.1:30 p.m.
MAA Student Presentations
Mathematical contest in modeling
Organizers:
Ben Fusaro, Salisbury State University

Friday January 18, 1991, 1:15 p.m.2:05 p.m.
MAA Invited Address
Algebraic curves and error correcting codes from a modern point of view.
Carlos Moreno*, Bernard M. Baruch College, City University of New York

Friday January 18, 1991, 1:15 p.m.3:15 p.m.
MAA Minicourse \#11: Part A
A survey of educational software
Organizers:
Virginia Knight, Meredith College
Vivian Kraines, Meredith College

Friday January 18, 1991, 1:15 p.m.3:15 p.m.
MAA Minicourse \#13: Part A
Great theorems from mathematical analysis: 16891881
Organizers:
William Dunham, Hanover College

Friday January 18, 1991, 1:15 p.m.3:15 p.m.
MAA Minicourse \#17: Part A
Instituting a mathematics placement program: Creating order out of chaos in freshman mathematics
Organizers:
Mary McCammon, Pennsylvania State University

Friday January 18, 1991, 1:15 p.m.3:10 p.m.
Rocky Mountain Mathematics Consortium Board of Directors' Meeting

Friday January 18, 1991, 1:20 p.m.3:20 p.m.
AMS Special Session on Turbulence, Mathematical Aspects, I

1:20 p.m.
Turbulent relaxation in electrostatic, magnetohydrodynamic, and gravitational systems.
David Montgomery*, Dartmouth College
(8637033)

2:00 p.m.
Informal Discussion

2:20 p.m.
Merger and reconnection: Generic processes in two and threedimensional incompressible turbulence.
Norman J. Zabusky*, Rutgers University, Piscataway
(86376539)

3:00 p.m.
Informal Discussion

Friday January 18, 1991, 2:20 p.m.3:15 p.m.
MAA CUPM Subcommittee on Quantitative Literacy Debate
Resolved\endash All college graduates should know college algebra

Friday January 18, 1991, 3:35 p.m.4:40 p.m.
MAA Business Meeting

Friday January 18, 1991, 5:00 p.m.7:00 p.m.
Association of Research Libraries Session
Delivering information to researchers: Opportunities and impediments
Organizers:
Ann Okerson, Association of Research Libraries

Friday January 18, 1991, 5:00 p.m.6:00 p.m.
Board on Mathematical Sciences Session
Using the DAVID II Report
Organizers:
Lawrence H. Cox, Director, Board on Mathematical Sciences

Friday January 18, 1991, 6:00 p.m.8:00 p.m.
MAA Minicourse \#10: Part B
Chaotic dynamical systems
Organizers:
Robert L. Devaney, Boston University

Friday January 18, 1991, 6:00 p.m.8:00 p.m.
MAA Minicourse \#14: Part A
Actuarial mathematics
Organizers:
Jonathan Kane, University of Wisconsin, Whitewater

Friday January 18, 1991, 6:00 p.m.8:00 p.m.
MAA Minicourse \#15: Part A
Learning abstract algebra by programming in ISETL
Organizers:
Ed Dubinsky, Purdue University
Uri Leron, Technion\endash IIT

Friday January 18, 1991, 6:00 p.m.7:55 p.m.
AMS Session on Semigroups

6:00 p.m.
On embedding quasipregroups.
Seymour Lipschutz*, Temple University, Philadelphia
(8632003)

6:15 p.m.
Retracts and semiretracts of free monoids.
James Anderson*, University of South Carolina, Spartanburg
Wit Fory\'s, Jagiellonian University, Poland
Tom Head, State University of New York, Binghamton
(86320323)

6:30 p.m.
Commutative semigroup cohomology.
P. A. Grillet*, Tulane University
(86320343)

6:45 p.m.
Archimedean components of P(Z).
Reuben Spake, College of Charleston
Bryce Hanlon*, College of Charleston
(86320347)

7:00 p.m.
Preaffine semigroups and convex matrix semigroups.
Donald D. Weddington*, San Jose State University
Jane M. Day, San Jose State University
(86320389)

7:15 p.m.
Right orders in semisimple semigroups.
Eric E. Lund*, Bemidji State University
(86320488)

7:30 p.m.
Free products of inverse monoids with amalgamation.
Steven Haataja*, University of Nebraska, Lincoln
(86320607)

7:45 p.m.
On the lattice of right congruences of a semigroup.
Eun Ho Lee*, University of Iowa
(86320619)

Friday January 18, 1991, 6:00 p.m.8:40 p.m.
AMS Session on Topology, I

6:00 p.m.
Symmetry conditions in terms of open sets.
P. Fletcher, Virginia Polytechnic Institute and State University
W. Hunsaker*, Southern Illinois University, Carbondale
(8635401)

6:15 p.m.
Entourage uniformities for locales.
P. Fletcher*, Virginia Polytechnic Institute and State University
W. Hunsaker, Southern Illinois University, Carbondale
(8635402)

6:30 p.m.
Finite uniform equidistant sets in plane continua.
S. M. Loveland*, Eastern Oregon State College
L. D. Loveland, Utah State University
(86354139)

6:45 p.m.
Suitable spaces and Newman's property.
L. F. McAuley, State University of New York, Binghamton
R. A. Johnson*, Indiana State University
(86354160)

7:00 p.m.
Space filling maps and dimension.
Matthew Brahm*, University of Texas, Austin
(86354181)

7:15 p.m.
An ordertheoretic characterization of Peano continua.
Sarah Holte*, University of Missouri, Rolla
(86354213)

7:30 p.m.
Ultrafilters and topological entropy of a complementary topology.
Rahim G. Karimpour*, Southern Illinois University, Edwardsville
(86354258)

7:45 p.m.
Generating topologies with cozero sets of functions.
Alan Dow, York University
M. Henriksen, Harvey Mudd College
R. D. Kopperman*, City College, City University of New York
R. G. Woods, University of Manitoba
(86354263)

8:00 p.m.
Regularity and extension of functions.
Roman Fri\v c, Washington State University
Darrell Kent*, Washington State University
(86354297)

8:15 p.m.
A strongly hereditarily separable, nonmetrisable manifold.
David Gauld*, University of Auckland, New Zealand
(86354322)

8:30 p.m.
Images of arcs and inverse limits.
J. Nikiel, University of Saskatchewan
H. M. Tuncali*, University of Saskatchewan,
E. D. Tymchatyn, University of Saskatchewan,
(86354356)

Friday January 18, 1991, 6:00 p.m.8:25 p.m.
AMS Session on Global Analysis

6:00 p.m.
Isolated periodic solutions and analysis of degenerate Hopf bifurcation with modal parameter in the HodginHuxley model.
LieJune Shiau*, University of Houston, Clear Lake
D. Hassard, State University of New York, College at Buffalo
(86358638)

6:15 p.m.
Singular set of heatflow problem for harmonic maps.
Xiaoxi Cheng*, Rice University
(86358647)

6:30 p.m.
On the accumulation of singular points in a bifurcation problem associated with a nonlinear ordinary differential equation.
Klaus Hackl*, University of Delaware
(86358700)

6:45 p.m.
An inverse function theorem with application to dynamical systems.
Patrick D. McSwiggen*, University of Cincinnati
(86358708)

7:00 p.m.
Intersections of thick Cantor sets.
Roger Kraft*, University of Cincinnati
(86358709)

7:15 p.m.
Axially symmetric harmonic maps minimizing a relaxed energy.
Robert Hardt, Rice University
Fanghua Lin, Courant Institute of Mathematical Sciences, New York University
Chi Cheung Poon*, Rice University
(86358764)

7:30 p.m.
Degenerate Hopf bifurcation and isolas of periodic solutions of an enzymecatalyzed model.
Brian D. Hassard*, State University of New York, Buffalo
Katie HQ Jiang, General Motors Institute, Flint, Michigan
(86358822)

7:45 p.m.
On bifurcation via lattice theory.
Liang Chen*, Memphis State University
(86358828)

8:00 p.m.
Subdiagonal algebras of AFalgebras.
Yiu Tung Poon*, Iowa State University
Zhongjin Ruan, University of Illinois, UrbanaChampaign
(8634687)

8:15 p.m.
Periodic points on nilmanifolds and solvmanifolds.
Edward C. Keppelmann*, University of Wisconsin, Madison
(86355375)

Friday January 18, 1991, 6:00 p.m.8:10 p.m.
AMS Session on Probability and Statistics

6:00 p.m.
Sample pathvalued conditional YehWiener integrals and a Wiener integral equation.
Chull Park, Miami University, Oxford
David Skoug*, University of Nebraska, Lincoln
(8636076)

6:15 p.m.
On characterizations of Cauchy, normal and uniform distributions.
G. G. Hamedani*, Marquette University
(8636093)

6:30 p.m.
Pathwise exponential stability of stochastic differential equaitons.
JingLin Jiang*, Wayne State University
(86360865)

6:45 p.m.
A Bayesian approach to testing the equality of means when the sample sizes are random.
Mehdi Razzaghi*, Bloomsburg University of Pennsylvania
(86362215)

7:00 p.m.
On rate of convergence of efficient detection criteria in signal processing when the noise covariance matrix is arbitrary.
K. W. Tam*, Portland State University
Yuehua Wu, York University
(86362239)

7:15 p.m.
Modified moment estimation of the parameters of a fourparameter generalized Weibull distribution.
Manmohan S. Arora*, University of Bahrain, Bahrain
(8636245)

7:30 p.m.
Confidence intervals for quantile intervals of finite populations under stratification.
John S. Meyer*, Muhlenberg College
(86362452)

7:45 p.m.
A random numerical method with application in ignition of bunsen burner.
Yu Song*, Tulane University
(8636509)

8:00 p.m.
Nonsmoothness of solutions of Volterra equations with Abeltype kernels.
Javad Abdalkhani*, Ohio State University, Lima
(86365199)

Friday January 18, 1991, 6:00 p.m.8:25 p.m.
AMS Session on Numerical Analysis and Systems

6:00 p.m.
An alternative to the Hilbert Bramble lemma.
Al Shenk*, University of California at San Diego, La Jolla
(86365793)

6:15 p.m.
Discontinuous inverse SturmLiouville problems with symmetric potentials.
Mei Kobayashi*, IBM Japan Limited, Japan
(8636597)

6:30 p.m.
Effectiveness of Galerkin type approximation in finite dimensional compensator design.
M. NouriMoghadam, Pennsylvania State University, Lehman
S. Zhu*, Pennsylvania State University, Lehman
(86393308)

6:45 p.m.
Finite dimensional approximation in gap topology and its application in control design.
M. NouriMoghadam*, Pennsylvania State University, Lehman
S. Zhu, Pennsylvania State University, Lehman
(86393309)

7:00 p.m.
Analysis of linear distributed systems via Fournier series operational matrix.
Mohsen Razzaghi*, Mississippi State University
(86393357)

7:15 p.m.
Application of H_infinity optimization theory to nonlinear distortion reduction.
A. J. Tamraz, Wichita State University
M. E. Sawan*, Wichita State University
(86393534)

7:30 p.m.
Stabilization of hybrid systems in the presence of feedback delays.
Gregg Turner*, Pomona College
(86393575)

7:45 p.m.
On nearoptimum largescale stochastic control systems.
G. S. Ladde, University of Texas, Arlington
O. Sirisaengtaksin*, University of HoustonDowntown
(86393792)

8:00 p.m.
Polynomial control for time delay system.
Ali Ansari*, Pennsylvania State University, Lehman
(86393842)

8:15 p.m.
Numerical range preservingoperators on Banach algebras.
A. K. Gaur*, Duquesne University
(86346560)

Friday January 18, 1991, 6:00 p.m.8:10 p.m.
AMS Session on Education

6:00 p.m.
Introducing a computer lab into the calculus sequence, I.
Arthur G. Sparks*, Georgia Southern University
John W. Davenport, Georgia Southern University
(86398723)

6:15 p.m.
Introducing a computer lab into the calculus sequence,II.
John W. Davenport*, Georgia Southern University
James P. Braselton, Georgia Southern University
(86398722)

6:30 p.m.
Volume and surface area in lakes.
Dan Cass, Saint John Fisher College
Gerald Wildenberg*, Saint John Fisher College
(86398612)

6:45 p.m.
Calculus workshop for everyone.
Thomas M. Zachariah*, Loyola Marymount University
(86398606)

7:00 p.m.
An experiment in teaching prospective elementary teachers.
Thomas W. Hungerford*, Cleveland State University
(86398177)

7:15 p.m.
Intangibles and the importance of model theory in the teaching of functional analysis.
Eric Schechter*, Vanderbilt University
(86398131)

7:30 p.m.
Nonstandard solutions to standard problems.
Joe Thrash*, University of Southern Mississippi
(86397718)

7:45 p.m.
A new approach to nonlinear topics in algebra.
Bella Wiener*, University of TexasPan American
(86397610)

8:00 p.m.
An alternative proof for the mean value theorem.
Morteza ShafiiMousavi*, Indiana University, South Bend
(86397360)

Friday January 18, 1991, 6:00 p.m.7:30 p.m.
MAA Committee on Participation of Women in Mathematics Special Presentation
Changing the climate\endash Skits and discussion
Organizers:
Patricia Kenschaft, Montclair State College

Friday January 18, 1991, 6:30 p.m.7:30 p.m.
MAA Special Lecture

6:30 p.m.
Desirable scientific habits of mind learned from George Polya.
Lester H. Lange*, San Jose State University and Moss Landing Marine Laboratories, Moss Landing, California

Friday January 18, 1991, 7:00 p.m.8:50 p.m.
AMS Special Session on Automatic Theorem Proving, I

7:00 p.m.
Some adventures with automatic theorem proving.
Woodrow W. Bledsoe*, University of Texas, Austin
(86368433)

7:30 p.m.
A theorem prover for a computational logic.
Robert S. Boyer*, University of Texas, Austin
J. Strother Moore, Computational Logic, Inc. Austin, Texas
(86303380)

8:00 p.m.
Mechanical geometry theorem proving using algebraic methods.
ShangChing Chou*, University of Texas, Austin
(86368376)

8:30 p.m.
Is automated theorem proving for you?
Ewing Lusk*, Argonne National Laboratory, Argonne, Illinois
(86368334)

Friday January 18, 1991, 7:00 p.m.8:30 p.m.
MAA National Center for the Teaching of Undergraduate Mathematics Open Discussion
What is it and what should it be?
Moderators:
Robert Bumcrot, Hofstra University
Inquiries: meet@ams.org