| Project/Area Number |
25287027
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Foundations of mathematics/Applied mathematics
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| Research Institution | Yokohama National University |
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Principal Investigator |
NEGAMI Seiya 横浜国立大学, 大学院環境情報研究院, 教授 (40164652)
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| Co-Investigator(Kenkyū-buntansha) |
山本 光 横浜国立大学, 教育人間科学部, 准教授 (00293168)
中本 敦浩 横浜国立大学, 環境情報研究科(研究院), 准教授 (20314445)
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| Co-Investigator(Renkei-kenkyūsha) |
OTA Katsuhiro 慶応義塾大学, 理工, 教授 (40213722)
SATO Iwao 小山工業高等専門学校, 一般科目, 教授 (70154036)
SUZUKI Yusuke 新潟大学, 自然科学系, 准教授 (10390402)
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥13,780,000 (Direct Cost: ¥10,600,000、Indirect Cost: ¥3,180,000)
Fiscal Year 2016: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2015: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2014: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2013: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
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| Keywords | 離散数学 / 位相幾何学的グラフ理論 / グラフの再埋蔵 / 閉曲面の三角形分割 / トポロジー / 平面被覆予想 / 識別彩色 / 閉曲面上のグラフ / 三角形分割 / 識別染色数 / 三角形分割の彩色 / 距離空間 / グラフの識別染色数 / グラフの被覆 / グラフの再埋蔵構造 |
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| Outline of Final Research Achievements |
We carried out synthetic research on topological graph theory, binding many subjects with a viewpoint of “re-embedding of graphs”. Especially, we developed a theory called “panel structures” to describe the re-embedding structures of triangulations on closed surface, implemented the theory as a computer program and re-verified a known-result on the torus, using it. We investigated many properties of asymmetric colorings of graphs embedded on closed surfaces and those of a new devised coloring called “triad-colorings” of triangulations on closed surfaces.
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