
AMS Meeting Program by Special Session
Current as of Tuesday, April 12, 2005 15:08:43
Program 
Deadlines 
Inquiries: meet@ams.org
Joint Summer Meeting
Columbus, OH, August 811, 1990
Meeting #859
Associate secretaries: W Wistar Comfort, AMS wcomfort@wesleyan.edu
Kenneth A Ross, MAA ross@math.uoregon.edu
AMS Special Session on Combinatorics

Thursday August 9, 1990, 7:00 a.m.10:50 a.m.
AMS Special Session on Combinatorics, I

7:00 a.m.
Voltagecurrent duality.
Dan Archdeacon*, University of Vermont
(85905129)

7:30 a.m.
Bounds on the distanced domination number.
Joan P. Hutchinson*, Macalester College
(85905109)

8:00 a.m.
Subgraphs with crossing number 2.
Dan McQuillan, Carleton University
R. B. Richter*, Carleton University
(85905161)

8:30 a.m.
Graphs containing crossing number 2 graphs.
Richard Vitray*, Appalachian State University
(85905168)

9:00 a.m.
Ideal secret sharing schemes and matroids.
Ernest F. Brickell*, Sandia National Laboratories
Daniel M. Davenport, Sandia National Laboratories
(8590599)

9:30 a.m.
Howell designs with subdesigns.
J. H. Dinitz*, University of Vermont
E. R. Lamken, Institute for Defense Analyses
(85905149)

10:00 a.m.
Mappings of sets of pairwise orthogonal orthomorphisms.
Robert Roth*, Emory University
(8590582)

10:30 a.m.
Singularity probabilities for random {+ minus}matrices.
Jeff Kahn*, Rutgers University, New Brunswick
J\'anos Koml\'os, Rutgers University, New Brunswick
Endre Szemer\'edi, Rutgers University, New Brunswick
(8590584)

Friday August 10, 1990, 1:30 p.m.3:50 p.m.
AMS Special Session on Combinatorics, II

1:30 p.m.
Graphs, games and structure theorems.
Neil Robertson, Ohio State University, Columbus
P. D. Seymour, Bellcore, Morristown, New Jersey
Robin Thomas*, Georgia Institute of Technology
(85905165)

2:00 p.m.
Supeulerian and collapsible graphs.
Paul A. Catlin*, Wayne State University
(85905151)

2:30 p.m.
A characterization in Z^n of unitdistance graphs in R^n.
Kiran B. Chilakamarri*, Ohio State University, Columbus
(85905146)

3:00 p.m.
Loop transversals to linear codes.
Jonathan D. H. Smith*, Iowa State University
(8590523)

3:30 p.m.
Large sets of disjoint tdesigns.
Yeow Meng Chee, University of Waterloo
Charles J. Colbourn, University of Waterloo
Steven C. Furino, University of Waterloo
Donald L. Kreher*, University of Wyoming
(8590580)

Saturday August 11, 1990, 7:00 a.m.10:50 a.m.
AMS Special Session on Combinatorics, III

7:00 a.m.
Delsarte's inequalities and tdesigns.
Richard M. Wilson*, California Institute of Technology
(85905154)

7:30 a.m.
Association schemes on triples and a ternary algebra.
Dale M. Mesner, University of Nebraska, Lincoln
Prabir Bhattacharya*, University of Nebraska, Lincoln
(8590519)

8:00 a.m.
Cycle ideals and tactical partitions of distanceregular graphs.
Aaron D. Meyerowitz*, Florida Atlantic University
(85905119)

8:30 a.m.
A large set of designs on vector spaces.
D. K. RayChaudhuri, Ohio State University, Columbus
Erin J. Schram*, Ohio State University, Columbus
(8590579)

9:00 a.m.
Structure theory of planar graphs embedded on nonplanar surfaces.
Bojan Mohar, University of Ljubljana, Yugoslavia
Neil Robertson*, Ohio State University, Columbus
Richard Vitray, Appalachian State University
(85905147)

9:30 a.m.
Leafless trees in countable graphs.
Bogdan Oporowski*, Louisiana State University, Baton Rouge
(85905162)

10:00 a.m.
Incidence matrices in geometric lattices.
Joseph P. S. Kung*, University of North Texas
(8590535)

10:30 a.m.
Strong Tutte functions of matroids and graphs.
Thomas Zaslavsky*, State University of New York, Binghamton
(8590529)

Saturday August 11, 1990, 12:00 p.m.2:20 p.m.
AMS Special Session on Combinatorics, IV

12:00 p.m.
Large sets of disjoint combinatorial structures.
Luc Teirlinck*, Auburn University, Auburn
(8590581)

12:30 p.m.
Invariant linear forms and regularity in codes and designs.
A. R. Calderbank*, AT&T Bell Laboratories, Murray Hill, New Jersey
(8590570)

1:00 p.m.
Designs from maximal arcs and difference sets.
J. F. Dillon*, National Security Agency
(85905150)

1:30 p.m.
The subconstituent algebra of a graph of thin type.
Paul Terwilliger*, University of Wisconsin, Madison
(85905107)

2:00 p.m.
On the diameter of Cayley graphs of permutation groups.
Laszlo Babai, University of Chicago
Akos Seress*, Ohio State University, Columbus
(85905148)
Inquiries: meet@ams.org

