2026 plan

• Jan. 22, Workshop on prehomogeneous vector space and number theory, 
  Chiba Institute of Technology.

• Feb. 19-20, Combinatorics for young researchers, Keio University.

• March 1-4, Multiple zeta values and L functions, Sophia University, Tokyo.

• March 9-11, Algebraic Geometry, Topology and Combinatorics 2026, Osaka University.

• March 16-18, Discrete Math and Algorithms 2026, Matsue, Japan.

• March 21, Game and puzzles, Waseda University.

• March 22, Waseda Workshop on Discrete Mathematics and Related Topics 2026,  Waseda University.

• March 23-26, Japanese Math. Soc., Tokyo science University. 

• March 31, Schubert calculus and related topics, Waseda University.

• Apr 15, 16, Intensive lecture: on Topics on q-Whittaker polynomials and representation theory by Kodera Ryosuke, Tokyo Univ.

• May 14-18, ALTReT 2026, Ikaho Sanyo Hotel, Gumma.

• June 1-4, Interactions of representation theory and related areas (as an organizer), Kyoto RIMS. website

• July, COMA seminar, Tokyo Univ.

• Aug. 17-19, JCCA?

• Aug. 24-28, ASIACOMB2026, Daejeon, South Korea. Talk!

• Sep. 1-4, Japan Math. Soc. Kobe Univ. 

• Sep. 7-10, JCDCG?

• Oct 19-22, Future of combinatorial representation theory, Kyoto RIMS.

• Mid Nov, visit Vietnam Institute for Advanced Study in Mathematics.

********************************************************************

Kanagawa University, Yokohama in Japan, instructor.

(+International Christian Univ., Hitotsubashi Univ., Chiba Institute of Technology, through 2026 academic year)

masato at gmail.com

ph. D (mathematics)

the University of Tennessee, 2010

Under supervision of Shashikant B. Mulay

 

Research interest:

Algebraic Combinatorics, Number Theory, Representation theory, Geometry

​

2010-2019:

Alternating sign matrices, Coxeter groups, 

Kazhdan-Lusztig polynomials, 

2019-2024:

Modular forms, Eisenstein series,

Riemann/multiple zeta functions,

2024-:

Kashiwara's Crystal theory, Young tableaux.

King tableaux, semistandard oscillating tableaux, 

Gessel's quasi-symmetric functions,

quasi-crystal/crystal skeleton, 

Coinvariant algebra, Schubert polynomials, 

Chromatic symmetric function, e-positivity.

​​​​​

*I found type C RSK with Berele insertion.

Joint work with Professor Tomoo Matsumura

(International Christian University).

Google Scholar

ORCID 0000-0002-0542-7906 

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Reviewer

• Discrete Math

• Electronic Journal of Combinatorics 

• Order

• SIGMA

• Journal of Analysis

• Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas