Algebraic Combinatorics
Conference at RIMS, Kyoto University

December 17-19, 2001
Room 420, Research Institute for Mathematical Sciences (RIMS)
Kyoto University
Kyoto, Japan
Organized by Akihiro Munemasa
munemasa@math.kyushu-u.ac.jp

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Program (last updated November 14, 2001)

Monday, December 17

9:40-10:40 Robert Griess (Univ. Michigan)
GNAVOA

11:00-12:00 Masahiko Miyamoto (Univ. Tsukuba)
VOA of type A_2

13:30-14:10 Boris Venkov (Steklov Inst. and Kyushu Univ.)
Shadows of odd unimodular lattices

14:20-15:00 Yuya Hashimoto (Hokkaido Univ.)
Correction to a theorem of McEliece on convolution codes

15:20-15:50 Masaaki Harada (Yamagata Univ.)
Ternary code construction of extremal unimodular lattices

16:00-16:20 Makoto Tagami (Kyushu Univ.)
Nonexistence of modular fusion algebras whose kernels are certain noncongruence subgroups

16:40-17:00 Keisuke Shiromoto (Ryukoku Univ.)
On generalized Lee weights for codes over Z_4


Tuesday, December 18

9:40-10:40 Renaud Coulangeon (Univ. Bordeaux)
Codes and designs in Grassmannians

11:00-12:00 Chat Yin Ho (Univ. Florida)
Linear groups and an application to collineation groups of
translation planes

13:30-14:10 Akira Hiraki (Osaka Kyoiku Univ.)
The number of columns (1,k-2,1) in the intersection array of distance-regular graphs

14:20-15:00 Mitsugu Hirasaka (National Taiwan Univ.)
Sufficient conditions for meta-thin association schemes to have a transitive automorphism group

15:20-15:50 Tatsuya Fujisaki (Kyushu Univ.)
Association schemes and strongly regular graphs derived from the finite projective space PG(3,q)

16:00-16:20 Dominic Elvira (Kumamoto Univ.)
On relative difference sets in non-abelian groups of order p^4

16:40-17:00 Sachiyo Terada (Kanazawa Univ.)
Perfect codes in SL(2,2^f)


Wednesday, December 19

9:40-10:40 Masato Sawabe (Kumamoto Univ.)
Group geometry and p-subgroup complex

11:00-12:00 Chuanming Zong (Peking Univ.)
From deep holes to free planes