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)
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Talk:
組合せ論サマースクール
(城崎) 2026/09
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Talk:
代数学シンポジウム (新潟大学）
2026/09
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Talk:
Oregon
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Talk:
Bayreuth
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Talk:
Krakow
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Visitor:
Sakumi Sugawara
2025/11/11-14, 2025/12/24, 2026/01/30, 2026/05/11-13
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Visitor: Bartosz Jaroslawski
2026/04/20-24
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勉強会：組合せ論的ホッジ理論勉強会（第2回）---Positive geometry, マトロイド, ねじれ交差形式---
(2026/03/27-29, The University of Osaka)
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Workshop:
Algebraic Geometry, Topology, Combinatorics and Related Topics 2026 (AGTC2026)
(2026/03/09-11, The University of Osaka)
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Visitor:
So Yamagata
2026/02/26-27
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Visitor:
Takuro Abe
2026/01/30
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Workshop:
Magnitude 2025
(2026/12/22-24, The University of Osaka)
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Workshop:
Arrangements in Osaka 2025
(2025/12/15-19, The University of Osaka)
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Visitor:
Paul Mucksch
2025/12/10-12
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やさしくまなぶ超平面配置
日本評論社, 2025年11月.
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Visitor: Dmitry Kozlov (Bremen), 23-30 November 2025
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Visitor: Francesco Conti (Inria - CNR), 23-27 September 2025
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Preprint:
(with Yukino Yagi)
Reconstrucion of oriented matroids from Varchenko-Gelfand algebras
arXiv:2509.19905
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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
Dept of Math,
Graduate School of Science,
Osaka University