Masahiko Yoshinaga

Japanese (日本語),

Department of Mathematics,
Graduate School of Science,
Osaka University,
Toyonaka, Osaka 560-0043, JAPAN

Photo

email: yoshinaga [at] math.sci.osaka-u.ac.jp
(or: mh.yoshinaga [at] gmail.com)

Talk: TBA Colloquium, Osaka University 30 Jan. 2023,

We are organizing Combinatorics, geometry and commutative algebra of hyperplane arrangements (16 - 20 Jan. 2023, Kyushu University)

We are organizing Workshop on Magnitude 2022 (22 - 23 Dec. 2022, Osaka)

We are organizing Various Guises of Reflection Arrangements (13 - 17 Mar 2023, Edinburgh)

Talk: TBA Characteristic Polynomials of Hyperplane Arrangements and Ehrhart Polynomials of Convex Polytopes RIMS

Talk: TBA, 有限群論，代数的組合せ論，頂点代数の研究 (RIMS)

Talk: TBA, トポロジー火曜セミナー, 東京大学 (Zoom)

Preprint: (with Suguru Ishibashi, and Sakumi Sugawara) Betti numbers and torsions in homology groups of double coverings. arXiv:2209.02236

I join the editorial board of Order (Jul. 2022).

Talk: TBA (2022/09/22) Japan-Vietnam Singularity Seminar (Zoom)

Schedules and related conferences

I have moved to Osaka University (2022/04/01)

I am working in the following topics. (See Research Activity for details.)

Logarithmic vector fields and freeness、
Topology of hyperplane arrangements.
Lattice points countings.
Matroids and Tutte polynomials.
Categorification of enumerative problems, magnitude homology of metric spaces

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Research Activity, Papers
Talks (Not updated)
Articles in Japanese (Japanese)
Lectures (Japanese)

Dept of Math, Graduate School of Science, Osaka University