Rchr
J-GLOBAL ID:200901098322399470
Update date: Aug. 29, 2024
Hachimori Masahiro
ハチモリ マサヒロ | Hachimori Masahiro
Affiliation and department:
Job title:
Associate Professor
Homepage URL (1):
http://infoshako.sk.tsukuba.ac.jp/~hachi/
Research field (2):
Applied mathematics and statistics
, Basic mathematics
Research keywords (4):
discrete structure
, shellability
, simplicial complex
, topological combinatorics
Research theme for competitive and other funds (16):
- 2022 - 2025 Study of combinatorial structure of simplicial complexes from partitions of nonpure complexes
- 2020 - 2024 大規模データ時代のネットワーク最適化に対する実応用に向けた説明力のある手法開発
- 2019 - 2023 Construction of theory of polyhedral approximation of the semi-definite cone in conic optimization and its applications
- 2016 - 2020 Optimization problems with time and it's applications on networks.
- 2015 - 2019 Construction of basic theory to accelerate the utilization of conic optimization in the real world
- 2014 - 2018 Similarities between the blocking and anti-blocking polyhedra
- 2013 - 2018 Analysis of the structure of simplicial complexes based on the homogeneity of substructures
- 2013 - 2016 Progressive development of network optimization algorithms and structure analytical methods with adaptation abilities for real world problems
- 2011 - 2015 A new paradigm in conic optimization: Optimization over the doubly nonnegative cone and software development
- 2009 - 2013 Topological combinatorics in the view of substructures and minimal counterexamples of simplicial complexes
- 2010 - 2012 Algorithm developments for network structure analysis and comprehensive expansions of network algorithms
- 2008 - 2010 Semidefinite Optimization Approach to Estimate the Locations of Nodes in the Sensor Network with High Accuracy
- 2007 - 2009 Development of theoretical foundation and extension on networks
- 2006 - 2008 Analysis and Visualization of Asymmetric Geographical Data
- 2003 - 2006 Topological combinatorics of simplicial complexes and optimization problems on acyclic orientations of graphs
- 2002 - 2004 Optimization of Systems having Uncontrollable Subsystems
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Papers (26):
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Masahiro Hachimori, Yumi Yamada. Some Computational Study of the Root Distribution of Ehrhart Polynomials. International Game Theory Review. 2023
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Masahiro Hachimori, Akihiro Higashitani, Yumi Yamada. The root distributions of Ehrhart polynomials of free sums of reflexive polytopes. Electronic Journal of Combinatorics. 2022. 29. 3. P3.26
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Masahiro Hachimori. Sequential Partitions of Nonpure Simplicial Complexes. Graphs and Combinatorics. 2021. 37. 5. 1891-1904
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Jinping Fan, Yujie Gu, Masahiro Hachimori, Ying Miao. Signature Codes for Weighted Binary Adder Channel and Multimedia Fingerprinting. IEEE Transactions on Information Theory. 2021. 67. 1. 200-216
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Masahiro Hachimori. Optimization problems on acyclic orientations of graphs, shellability of simplicial complexes, and acyclic partitions. "Mathematical Programming and Game Theory", S.K. Neogy, R.B. Bapat, D. Dubey eds., Springer-Verlag. 2018. 49-66
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MISC (17):
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八森正泰. 組合せ数学の雑記帳:マッチングと交互サイクルとモース関数. 数学セミナー. 2020. 2020年3月号
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八森正泰. 組合せ数学の雑記帳:シェリングと分割とh-列. 数学セミナー. 2020. 2020年2月号
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八森正泰. 組合せ数学の雑記帳:シェラブルでない単体的複体. 数学セミナー. 2020. 2020年1月号. 58-63
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八森 正泰. 組合せ数学の雑記帳:シェラブルな単体的複体. 数学セミナー. 2019. 2019年12月号. 64-69
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八森 正泰. 組合せ数学の雑記帳:ハム・サンドイッチとネックレス. 数学セミナー. 2019. 2019年11月号. 48-53
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Books (3):
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Algebraic and Geometric Ideas in the Theory of Discrete Optimization
Kyoritsu Shuppan Co., Ltd 2023 ISBN:9784320114951
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基礎数学 IV. 最適化理論
東京化学同人 2019
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Lectures on Polytopes (Günter M. Ziegler, translation with Yoshio Okamoto)
Springer-Verlag Tokyo 2003
Lectures and oral presentations (23):
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ポセットのacyclic recursive signing 再考
(7th Pacific Workshop on Discrete Mathematics 2024)
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Nonpureな単体的複体の分割とh-triangleの非負性
(2023年度応用数学合同研究集会20 2023)
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Graded posetのequatorial Ehrhart多項式について
(軽井沢グラフと解析研究集会2023 2023)
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格子凸多面体のfree sum のEhrhart 多項式の根の分布
(2023年度日本数学会年会 2023)
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射影空間の四角形分割の染色数
(2022年度応用数合同研究集会 2022)
more...
Education (2):
- 1995 - 2000 The University of Tokyo Graduate School of Arts and Sciences Department of Systems Science (Master Course & PhD Course)
- 1991 - 1995 The University of Tokyo College of Arts and Sciences Department of Natural and Artificial Systems
Work history (6):
Committee career (8):
- 1999/10 - 現在 組合せ数学セミナー(COMAゼミ)幹事
- 2015/01 - 2020/09 Graphs and Combinatorics Managing Editor
- 2016 - 2020/03 応用数学合同研究集会 世話人
- 2017/10 - 2019/10 日本数学会 応用数学分科会 分科会委員
- 2012/10 - 2014/10 日本数学会 応用数学分科会委員
- 2011/04 - 2013/09 日本評論社 数学セミナー, 書評委員
- 2007/04 - 2011/10 組合せ論サマースクール実行委員
- 2007/04 - 2007/10 組合せ論サマースクール実行委員長
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Association Membership(s) (1):
The Mathematical Society of Japan
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