• The call for applications for a postdoctoral researcher position has been reopened. Please click here for details. (Application deadline: Oct. 31, 2026, JST)

• We will organize an international conference "Applications and Applied Perspectives of Hyperplane Arrangements" (Kyushu University, Nishijin Plaza, November 9-13, 2026)

• Abe gave a talk in the international conference ``Japanese Australian workshop on Real and Complex Singularities'' at The University of Sydney (October 1, 2026)

• We organized ``COmbinatorics Summer school 2026 (COS 2026)'' (Kinosaki Community Center, September 8-11, 2026)  (details are in Japanese)

• We organized an international conference "Arrangements in Oregon" (University of Oregon, Augsut 29-30, 2026).

• Abe gave a talk in Moduli and Friends II at Simion Stoilow Institute of Mathematics of the Romanian Academy (IMAR) (August 24, 2026).

• A paper "Vector fields of graphic arrangements and face rings of simplicial posets" is now available on  arXiv (T. Abe, S. Murai, August 2026).

• Abe gave a talk in Order Seminar at The University of Osaka (July 30,  2026). 

• A paper "Residue ideals of hyperplane arrangements" is now available on  arXiv (T. Abe, S. Murai, June 2026).

• We organized an international conference ``Algebraic and Geometric Aspects of the Theory of Hyperplane Arrangements'' and Abe gave a talk at the conference (University of the National Education Commission, Kraków, May 31-June5, 2026)

• We organized an international conference ``Chicago-Tokyo Algebraic Geometry Workshop''  (University of Illinois Chicago, June 2-5, 2026)

• Abe gave a talk in Algebra Seminar at New Mexico State University (22 April 2026).

• We organized a workshop "Arrangement Workshop in Sapporo 2026" (Hokkaido University, April 13-15, 2026)

• The project number has been updated from 25H00399 to 25K24692 (April 2026).

Click here for past news

Conferences: 

• "Applications and Applied Perspectives of Hyperplane Arrangements" (Kyushu University, Nishijin Plaza, November 9-13, 2026)

Seminars:

• Applied Mathematics Seminar in Rikkyo University (details are in Japanese)

• Hyperplane Arrangements Seminar (details are in Japanese)

List of research achievements is here.

Principal Investigator: Takuro Abe (Rikkyo University)

Co-Investigators: Shizuo Kaji (Kyoto University)

　　　　　　 Shunsuke Takagi (The University of Tokyo)

　　　　　　 Masaya Yasuda (Rikkyo University)

　　　　　　 Masahiko Yoshinaga (Osaka University)　　　

Postdoc: Nobukazu Kowaki (Osaka University)

Secretaries: A. Taniguchi (Mon., Wed. & Fri.), N. Kuroda (Tue., Wed. & Thu.)