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
  • 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.
  • Preprint: (with Pauline Bailet, Alexandru Dimca) A vanishing result for the first twisted cohomology of affine varieties and applications to line arrangements. arXiv:1705.06022 (17 May 2017)
  • We are organizing series of conferences in honor of Prof. Mario Salvett's 60: Perspectives in Algebraic Topology (5. June 2017) and Arrangements and Beyond (6-9, June 2017). Both are held in Pisa, Italy.
  • I am staying in Bremen (ALTA) for one year (Aug 2016 - 20 Sep 2017).
  • We are organizing Hyperplane Arrangements and related topics 13--14, Feb. 2017.
  • Preprint: (with Kazuki Iijima, Kyouhei Sasaki, and Yuuki Takahashi) Eulerian polynomials and polynomial congruences. arXiv:1611.10147 (30 Nov. 2016)
  • Preprint: Characteristic polynomials of Linial arrangements for exceptional root systems. arXiv:1610.07841. (26 Oct. 2016)

  • I am working in

    Dept of Math, Hokkaido University