AMS Sectional Meeting Program by Special Session
Current as of Tuesday, April 12, 2005 15:09:04
Central 1993 Spring Sectional Meeting
DeKalb, IL, May 2023, 1993
Meeting #882
Associate secretaries: Andy R Magid, AMS amagid@ou.edu
Special Session on Combinatorics

Thursday May 20, 1993, 1:00 p.m.3:50 p.m.
Special Session on Combinatorics, I
Room 204A, DuSable Hall

1:00 p.m.
On jumping constant conjecture for multigraphs.
Vojtech R\"odl, Emory University
Alexander Sidorenko*, Courant Institute of Mathematical Sciences, New York University
(88205174) 
1:30 p.m.
Incidence posets of trees in posets of large dimension.
Graham R. Brightwell, London School of Economics, England
William T. Trotter*, Bellcore, Morristown, New Jersey
(88206162) 
2:00 p.m.
Negative density results in Euclidean Ramsey Theory.
R. L. Graham*, AT&T Bell Laboratories, Murray Hill, New Jersey
(88205140) 
2:30 p.m.
On a problem of embedding graphs into the plain.
Mario Szegedy*, AT&T Bell Laboratories, Murray Hill, New Jersey
(88205160) 
3:00 p.m.
Some geometric applications of extremal graph theory.
J\'anos Pach*, Courant Institute of Mathematical Sciences, New York University
(88205154) 
3:30 p.m.
Inequalities on codes with restricted distances.
Richard M. Wilson*, California Institute of Technology
(88205157)

1:00 p.m.

Friday May 21, 1993, 8:00 a.m.10:50 a.m.
Special Session on Combinatorics, II
Room 204A, DuSable Hall

8:00 a.m.
On generalizations of the deBruijnErdos Theorem.
Hunter S. Snevily*, California Institute of Technology
(88205175) 
8:30 a.m.
New constructions of bipartite graphs on m,n vertices, with many edges, and without small cycles.
Felix Lazebnik*, University of Delaware
V. A. Ustimenko, Kiev State University, Ukraine
A. J. Woldar, Villanova University
(8820594) 
9:00 a.m.
Turan type results for graphs with many triangles.
P. Erd\"os, Hungarian Academy of Science, Hungary
Z. F\"uredi, University of Illinois, UrbanaChampaign
R. Gould, Emory University
D. S. Gunderson*, Emory University
(88205187) 
9:30 a.m.
On Erdos problem about bandwidth of graphs.
Jianfang Wang, Academia Sinica, People's Republic of China
Douglas B. West*, University of Illinois, UrbanaChampaign
Bing Yang, Northwest Normal University, China
(88205163) 
10:00 a.m.
Hadwiger's conjecture for K_6free graphs.
Robin Thomas*, Georgia Institute of Technology
(88205161) 
10:30 a.m.
Eigenvalues and separators of graphs.
Fan R.K Chung*, Bellcore, Morristown, New Jersey
(88205176)

8:00 a.m.

Friday May 21, 1993, 4:30 p.m.5:50 p.m.
Special Session on Combinatorics, III
Room 204A, DuSable Hall

4:30 p.m.
Asymptotic enumeration of full graphs.
D. J. Kleitman*, Massachusetts Institute of Technology
F. Lasaga, Massachusetts Institute of Technology
L. J. Cowen, Massachusetts Institute of Technology
(88205153) 
5:00 p.m.
Graph generated unionclosed families and the unionclosed sets conjecture.
Emanuel Knill*, Los Alamos National Laboratory
(88205155) 
5:30 p.m.
Twopart shadows.
G. O. H. Katona*, University of Illinois, UrbanaChampaign and Mathematical Institute of Hungarian Academy of Sciences, Hungary
(88205173)

4:30 p.m.

Saturday May 22, 1993, 9:30 a.m.10:50 a.m.
Special Session on Combinatorics, IV
Room 204A, DuSable Hall

9:30 a.m.
Lower bounds for chromatic numbers of hypergraphs. The topological method.
Igor Kriz*, Chicago University
(88205164) 
10:00 a.m.
The crossing number of a graph on a compact 2manifold.
F. Shahrokhi, University of New Mexico
O. S\'ykora, University of New Mexico
L. A. Sz\'ekely*, University of New Mexico
I. Vr\v to, University of New Mexico
(88205159) 
10:30 a.m.
Some recent developments of the Erdos Ginzburg Ziv theorem.
A. Bialostocki*, University of Idaho
(88205169)

9:30 a.m.

Saturday May 22, 1993, 1:00 p.m.2:20 p.m.
Special Session on Combinatorics, V
Room 204A, DuSable Hall

1:00 p.m.
Addition of residue classes modulo p^n.
B\'ela Bollob\'as*, University of Cambridge, England
(88211158) 
1:30 p.m.
What is the structure of A+A if A+A is large?
Vera T. S\'os*, Hungarian Academy of Science, Hungary
(88211156) 
2:00 p.m.
On a problem of Rohrbach for finite groups.
XingDe Jia*, Southwest Texas State University
(8821180)

1:00 p.m.