第4回位相幾何学的グラフ理論研究集会

WORKSHOP ON TOPOLOGICAL GRAPH THEORY
at Yokohama National University, Nov.24 -- 26, 1992

November 24, Tuesday

13:00 -- 13:30

[13:30 -- 14:00] Problem Session

[14:30 -- 15:00] M. Hara, Yokohama Nat. Univ.
On construction of self-dual graphs on closed surfaces

[15:00 -- 15:30] K. Kato, Yokohama Nat. Univ
On the geuns 2 crossing number of K9

[16:00 -- 16:30] S. Yamaguchi, Tokai Univ.
On the number of embeddings of graphs into the projective plane

[16:30 -- 17:00] H. Maehara, Ryukyu Univ.
Inequarilies on the edge length of convex polyhedra

November 29, Friday

13:00 -- 13:30

[10:30 -- 11:00] B. Wang
On polymonials of graphs

[11:10 -- 11:30] M. Watanabe, Okayama Sci. Univ.
To be announced

[13:00 -- 14:00] Serge Lawrencenko, Russian
Generalization of Weinberg theorem to projective-planar graphs and toroidal graphs

[14:00 -- 14:30] S. Negami, Yokohama Nat. Univ.
Polynomial invariants of graphs embedded on surfaces

[15:00 -- 15:30] A. Nakamoto, Yokohama Nat. Univ.
Diagonal flip of quadrangulations on closed surfaces

[15:30 -- 16:00] S. Yamasita, Waseda Univ.
The strong embedding theorem for Ω2-trivial graphs

[16:30 -- 17:00] Y. Tukui, Shonan Inst. Tech.
On reduction of quartic graphs

[17:00 -- 17:30] K. Asano, Kansei Gakuin Univ.
On decision of non-crossingness of line segments on the plane

November 30, Saturday
13:00 -- 13:30

[10:30 -- 11:00] T. Endo and T. Otsuki, Waseda Univ.
On book embeddings of graphs

[11:00 -- 11:30] K. Taniyama, Waseda Univ.
Embeddings of graphs and cohomology of configuration spaces

[13:30 -- 14:30] Problem Session

[15:00 -- 17:00] Free Talk

Organizer: Seiya NEGAMI
Department of Mathematics, Faculty of Education
Yokohama National University
156 Tokiwadai, Hodogaya-Ku, Yokohama 240, Japan
TEL: 045-335-1451 ex. 2232
E-mail: negami@ms.ed.ynu.ac.jp