Yashima Takamasa

ヤシマタカマサ | Yashima Takamasa

Affiliation and department：
Job title： Assistant Professor
Homepage URL (1)： https://sites.google.com/site/takamasayashimabadaogaojiang/home

Research field (2)： Applied mathematics and statistics , Basic mathematics

Research keywords (8)： factor , spanning subgraph , properly colored , rainbow , spanning tree , tree , Discrete Mathematics , Graph Theory

Research theme for competitive and other funds (3)：

Papers (15)：

Jun Fujisawa, Masao Tsugaki, Tomoki Yamashita, Takamasa Yashima. Hamilton cycles passing through a matching in a bipartite graph with high degree sum. Discrete Mathematics. 2024. 347. 1. 113692
Naoki Matsumoto, Kenta Noguchi, Takamasa Yashima. Cubic graphs having only k-cycles in each 2-factor. Discussiones Mathematicae Graph Theory. 2024. 44. 1. 281-296
Yoshimi Egawa, Masao Tsugaki, Takamasa Yashima. A minimum degree condition for the existence of S-path-systems in bipartite graphs. Australasian Journal of Combinatorics. 2023. 87. 3. 423-439
Masao Tsugaki, Tomoki Yamashita, Takamasa Yashima. Panconnectivity in Bipartite Graphs with Large Degree sum. Graphs and Combinatorics. 2023. 39. 2
Michitaka Furuya, Shun-ichi Maezawa, Ryota Matsubara, Haruhide Matsuda, Shoichi Tsuchiya, Takamasa Yashima. Degree sum condition for the existence of spanning k-trees in star-free graphs. Discussiones Mathematicae Graph Theory. 2022. 42. 1. 5-13

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MISC (2)：

Lectures and oral presentations (26)：

On cycles and factors in graphs with large degree sum
(2023)
Panconnectivity in bipartite graphs with large degree sum
(Japanese Conference on Combinatorics and its Application 2022, 離散数学とその応用研究集会2022 2022)
二部グラフにおける Panconnectivity およびその周辺について
(RIMS共同研究「グラフの局所構造の制限が与える不変量への影響」 2022)
特別な2-因子のみをもつ3-正則グラフについて
(日本数学会2021年度秋季総合分科会 2021)
Closure and spanning trees with bounded total excces
(2020)

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Education (3)：

2012 - 2015 Tokyo University of Science Doctor Course in Department of Mathematical Information Science
2010 - 2012 Tokyo University of Science Master Course in Department of Mathematical Information Science
2006 - 2010 Tokyo University of Science Faculty of Science Division 2 Department of Mathematics

Professional career (2)：

Work history (8)：

2020/04 - 現在 Seikei University Faculty of Science and Technology Assistant Professor
2016/04 - 現在 Shibaura Institute of Technology College of Engineering Part-time Lecturer
2021/04 - 2023/03 Tokyo Polytechnic University Faculty of Engineering
2016/04 - 2020/03 Keio University Faculty of Science and Technology Visiting Researcher
2014/04 - 2020/03 Tokyo Medical and Dental University College of Liberal Arts and Sciences Part-time Lecturer

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Committee career (11)：

2024/03 - 2024/03 RIMS共同研究(グループA型):RIMS共同研究「グラフの辺の情報を基にした新たな証明手法の確立」(3月4日~3月8日の5日間実施) 実行委員
2023/02 - 2023/03 RIMS共同研究(グループA型):「グラフの辺着色グラフへの拡張性および非拡張性」(2月27日~3月3日の5日間実施) 実行委員
2022/09 - 2022/09 2022年度統計関連学会連合大会実行委員
2022/08 - 2022/08 Japanese Conference on Combinatorics and its Application 2022, 離散数学とその応用研究集会2022 組織委員
2021/02 - 2021/02 第17回組合せ論若手研究集会組織委員

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Awards (1)：

Association Membership(s) (1)：

The Mathematical Society of Japan

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