Masahiko Yoshinaga


Department of Mathematics,
Hokkaido University,
North 10, West 8, Kita-ku,
Sapporo, 060-0810,


email: yoshinaga [at]
(or: mh.yoshinaga [at]

Discrete Geometric Structure Seminar
  • Preprint: (with Tan Nhat Tran) Combinatorics of certain abelian Lie group arrangements and chromatic quasi-polynomials. arXiv:1805.03365. (May 9 2018)
  • I modified Research Activity.
  • We are organizing Matroids, Reflection Groups, and Free Hyperplane Arrangements 11-15 , June 2018, RIMS, Kyoto University.
  • Preprint: (with Ryuki Kaneta) Magnitude homology of metric spaces and order complexes arXiv:1803.04247. (March 1 2018)
  • Delphine Pol has arrived in Sapporo. She is staying here till September 2018 (JSPS Postdoc).
  • We will start Discrete Geometric Structure Seminar (Oct 2017 -).
  • We are organizing 研究集会「不変式・超平面配置と平坦構造」 9--10, Nov. 2017. 北海道大学数学教室
  • We are organizing Advances in Hyperplane Arrangements 16--18, Aug. 2017. Bremen, Germany.
  • Preprint: (with Ye Liu and Tan Nhat Tran) G-Tutte polynomials and abelian Lie group arrangements. arXiv:1707.04551.
  • The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology, The Young Scientists’ Prize. (April 2017)

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

    Dept of Math, Hokkaido University