Hosaka Tetsuya 保坂哲也

… Alternative Names

Researcher Number	50344908
Other IDs
External Links
Affiliation (Current)	2021: 静岡大学, 理学部, 准教授
Affiliation (based on the past Project Information) *help	2015 – 2019: 静岡大学, 理学部, 准教授 2015: 静岡大学, 総合科学技術研究科, 准教授 2013 – 2014: 静岡大学, 理学(系)研究科(研究院), 准教授 2011 – 2012: 静岡大学, 理学部, 准教授 2007 – 2010: Utsunomiya University, Faculty of Education, Associated Professor 2005 – 2006: 宇都宮大学, 教育学部, 助教授 2002 – 2004: Utsunomiya Univ., Dept. of Education, Lecturer, 教育学部, 講師
Review Section/Research Field	Principal Investigator Geometry / Basic Section 11020:Geometry-related Except Principal Investigator Geometry / Global analysis
Keywords	Principal Investigator Coxeter群 / CAT(0)空間 / 幾何学的群論 / Davis複体 / 位相幾何学 / CAT(0)群 / 再構成可能グラフ / 鏡映群 / 境界 / asymptotic次元 … More Except Principal Investigator 幾何学 / トポロジー / コクセター群 / 位相幾何学 / 次元論 / 位相幾何 / 幾何学的群論 / CAT(0)空間 / 同相群 / 微分同相群 / 位相的力学系 / 鎖回帰集合 / 力学系 / 理想境界 / Coarse幾何 / Coarse幾何学 / coarse幾何学 / CAT(0)群 / asymptotic次元 / shadowing property / Axiom A / Coxeter群 / 測度保存変換 / 非コンパクト多様体 / 測度保存同相写像 / End charge準同型 / 周期 / 不動点 / 差分方程式 / 鎖回帰性 / 周期解 / 周期点 / 位相力学系 / アトラクター / コンパクト距離空間 / コホモロジー次元論 / 次元 / コホモロジー次元 / 無限次元多様体 / 一様同相写像 / 一様位相 / Whitney位相 / 回帰性 / 極限集合 / ケーラー多様体 / 漸近的トポロジー / 漸近的次元 / 距離空間 / 写像によるカラーリング / Coarse 幾何学 / 距離に依存するコンパクト化 / Higsonコンパクト化 / 連続体 / コンパクト化 / Shape理論 / メンガ－普遍空間 / CE同値性 / CAT(O)空間 / 擬軌道尾行性 / ベクトル場 / 構造安定性 / connecting lemma / 分岐 / カオス / connectin lemma / dynamical systems theory / bifurcation / strong transversality condition / pseudo orbits / vector fields / 推移写像 / グラフ / 被覆次元 / コンパクト指数 / コクセター / コクセター系 / 区分的単調写像 / 次元関数 / transitive / graph / Coxeter group / compactness degree / 離散群 / コホモロジー / 写像類群 / オイラー数 / 複体 / 特性類 / コホモロジー作用素 / 符号数 / ホモロジー表現 / Riemann-Roch公式 / Steenrod作用素 / 群のコホモロジー / Artin群 / 複体の幾何構造 / 同変特性類 / Davis-Vinberg複体 / discrete groups / cohomology / topology / geometry / mapping class groups / Euler characteristic / complex / 対称積 / 等長写像群 / Menger 曲線 / Sierpiskiカーペット / 連続体論 / Menger普遍空間 / Sierpinski普遍空間 / Menger曲線 / Sierpinskiカーペット / 等長群 / 半直積 / 対象積 / 有限位相空間 / 逆極限 / 連続体理論 / ユーリッド空間 / リプシッツ同値 / 幾何学的トポロジー / asymptotic次元論 / 埋蔵問題 / 国際情報交換 / 国際情報研究 / 国際研究者交流 / coarse幾何 / 国際研究者交流（ポーランド） / 国際情報交換（ポーランド） Less

群の作用する非正曲率空間および無限コクセター群と有限グラフの研究Principal InvestigatorOngoing
- Principal Investigator
  
  保坂哲也
- Project Period (FY)
  2018 – 2021
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 11020:Geometry-related
- Research Institution
  Shizuoka University
Research on Borel conjecture and Novikov conjecture in CAT (0) spaces
- Principal Investigator
  
  Chinen Naotsugu
- Project Period (FY)
  2015 – 2019
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  防衛大学校(総合教育学群、人文社会科学群、応用科学群、電気情報学群及びシステム工学群)
Research on spaces of non-positive curvature, their isometry groups and Coxeter groupsPrincipal Investigator
- Principal Investigator
  
  Hosaka Tetsuya
- Project Period (FY)
  2013 – 2016
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Geometry
- Research Institution
  Shizuoka University
Embedding problems related to asymptotic dimension in coarse geometry
- Principal Investigator
  
  Koyama Akira
- Project Period (FY)
  2012 – 2015
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  Waseda University
Study of groups of measure-preserving homeomorphisms and volume-preserving diffeomorphisms of noncompact manifolds
- Principal Investigator
  
  YAGASAKI Tatsuhiko
- Project Period (FY)
  2010 – 2012
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  Kyoto Institute of Technology
Study on boundaries of Coxeter groups anddynamical structure on the chain recurrent set
- Principal Investigator
  
  YOKOI Katsuya
- Project Period (FY)
  2010 – 2012
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  Jikei University School of Medicine
Coarse analyzing metric spaces of non-positive curvature and topological analyzing remainders of its compactifications
- Principal Investigator
  
  CHINEN NAOTSUGU
- Project Period (FY)
  2010 – 2013
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  防衛大学校(総合教育学群、人文社会科学群、応用科学群、電気情報学群及びシステム工学群)
  Hiroshima Institute of Technology
Cohomological dimension theory in coarse geometry
- Principal Investigator
  
  KOYAMA Akira
- Project Period (FY)
  2009 – 2011
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  Waseda University
  Shizuoka University
Research on spaces of non-positive curvature with group actions and Coxeter groupsPrincipal Investigator
- Principal Investigator
  
  HOSAKA Tetsuya
- Project Period (FY)
  2009 – 2012
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Geometry
- Research Institution
  Shizuoka University
  Utsunomiya University
Study of various groups of homeomorphisms of noncompact manifolds
- Principal Investigator
  
  YAGASAKI Tatsuhiko
- Project Period (FY)
  2007 – 2008
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  Kyoto Institute of Technology
Research of dimension theory and dynamical systems on boundaries of Coxeter groups
- Principal Investigator
  
  YOKOI Katsuya
- Project Period (FY)
  2007 – 2009
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  Shimane University
Study on Coxeter groups and spaces of non-positive curvaturePrincipal Investigator
- Principal Investigator
  
  HOSAKA Tetsuya
- Project Period (FY)
  2006 – 2008
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Geometry
- Research Institution
  Utsunomiya University
Studies on the Cohomology of Mapping Class Groups, Coxeter Groups and Artin Groups
- Principal Investigator
  
  AKITA Toshiyuki
- Project Period (FY)
  2005 – 2007
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  Hokkaido University
Research of a boundary of a Coxeter system and dimension theory
- Principal Investigator
  
  YOKOI Katsuya
- Project Period (FY)
  2004 – 2006
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  Shimane University
無限Coxeter群の幾何学的研究Principal Investigator
- Principal Investigator
  
  保坂哲也
- Project Period (FY)
  2003 – 2005
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Geometry
- Research Institution
  Utsunomiya University
Bifurcations of vector fields possessing the shadowing property
- Principal Investigator
  
  SAKAI Kazuhiro
- Project Period (FY)
  2001 – 2002
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Global analysis
- Research Institution
  Utsunomiya University

All 2019 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 Other

All Journal Article Presentation

[Journal Article] Hyperbolic right-angled Coxeter groups with boundaries as a Sierpinski carpet and a Menger curve2019
- Author(s)
  Naotsugu Chinen; Tetsuya Hosaka
- Journal Title
  
  Topology and its Applications
  
  Volume: 260 Pages: 70-85
- DOI
  10.1016/j.topol.2019.03.024
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K03273, KAKENHI-PROJECT-15K04885
[Journal Article] On equivariant homeomorphisms of boundaries of CAT(0) groups and Coxeter groups2015
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Differential Geometry and its Applications
  
  Volume: 43 Pages: 68-94
- DOI
  10.1016/j.difgeo.2015.09.004
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25800039
[Journal Article] Reconstructible graphs, simplicial flag complexes of homology manifolds and associated right-angled coxeter groups2015
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Osaka Journal of Mathematics
  
  Volume: 未定
- NAID
  120005830508
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-25800039
[Journal Article] Erratum to "Asymptotic dimension and boundary dimension of proper CAT(0) spaces"2015
- Author(s)
  Naotsugu Chinen and Tetsuya Hosaka
- Journal Title
  
  Tsukuba Journal of Mathematics
  
  Volume: 39
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25800039
[Journal Article] Erratum to “Asymptotic dimension and boundary dimension of proper CAT(0) spaces’’2015
- Author(s)
  Naotsugu Chinen and Tetsuya Hosaka
- Journal Title
  
  Tsukuba Journal of Mathematics
  
  Volume: 39 Pages: 165-166
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-15K04885
[Journal Article] A new class of reconstructible graphs from some neighbourhood conditions2014
- Author(s)
  Tetsuya Hosaka and Yonghuo Xiao
- Journal Title
  
  Hokkaido Mathematical Journal
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25800039
[Journal Article] Reconstructible graphs, simplicial flag complexes of homology manifolds and associated right-angled Coxeter groups2013
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Osaka Journal of Mathematics
  
  Volume: （印刷中）
- NAID
  120005830508
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740037
[Journal Article] On a new class of rigid Coxeter groups2013
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Hokkaido Mathematical Journal
  
  Volume: 42 Pages: 239-246
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25800039
[Journal Article] Asymptotic dimension and boundary dimension of proper CAT(0) spaces2013
- Author(s)
  Naotsugu Chinen and Tetsuya Hosaka
- Journal Title
  
  Tsukuba Journal of Mathematics
  
  Volume: to appear
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540098
[Journal Article] On a new class of rigid Coxeter group2013
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Hokkaido Mathematical Journal
  
  Volume: （印刷中）
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740037
[Journal Article] On a new class of rigid Coxeter groups2013
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Hokkaido Mathematical Journal
  
  Volume: 42, no.2 Pages: 239-246
- URL
  http://projecteuclid.org/euclid.hokmj/1372859586
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540105
[Journal Article] On a new class of rigid Coxeter group2013
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Hokkaido Mathematical Journal
  
  Volume: to appear
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540098
[Journal Article] Reconstructible graphs, simplicial flag complexes of homology manifolds and associated right-angled Coxeter groups2013
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Osaka Journal of Mathematics
  
  Volume: to appear
- NAID
  120005830508
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540098
[Journal Article] On splitting theorems for CAT(0) spaces and compact geodesic spaces of non-positive curvature2012
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Mathematische Zeitschrift
  
  Volume: 272 Pages: 1037-1050
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540098
[Journal Article] Asymptotic dimension and boundary dimension of proper CAT(0) spaces2012
- Author(s)
  Naotsugu Chinen、Tetsuya Hosaka
- Journal Title
  
  Tsukuba Journal of Mathematics
  
  Volume: 36, no.2 Pages: 185-191
- URL
  http://projecteuclid.org/euclid.tkbjm/1358776998
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540105
[Journal Article] Parabolic subgroups of Coxeter groups acting by reflections on CAT(0) spaces2012
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Rocky Mountain Journal of Mathematics
  
  Volume: 42 Pages: 1207-1214
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540098
[Journal Article] Asymptotic dimension and boundary dimension of proper CAT(0) spaces2012
- Author(s)
  Naotsugu Chinen and Tetsuya Hosaka
- Journal Title
  
  Tsukuba Journal of Mathematics
  
  Volume: 36 Pages: 185-191
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740037
[Journal Article] Parabolic subgroups of Coxeter groups acting by reflections on CAT(0) spaces2012
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Rocky Mountain Journal of Mathematics
  
  Volume: Vol 42 Pages: 1207-1214
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740037
[Journal Article] Parabolic subgroups of Coxeter groups acting by reflections on CAT(0) spaces2012
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Rocky Mountain Journal of Mathematics
  
  Volume: 42, no.4 Pages: 1207-1214
- DOI
  10.1216/rmj-2012-42-4-1207
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540105
[Journal Article] Asymptotic dimension and boundary dimension of proper CAT(0) spaces2012
- Author(s)
  知念直紹、保坂哲也
- Journal Title
  
  Tsukuba Journal of Mathematics
  
  Volume: 36 Pages: 185-191
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540105
[Journal Article] On splitting theorems for CAT(0) spaces and compact geodesic spaces of non-positive curvature2012
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Mathematische Zeitschrift
  
  Volume: 272 Pages: 1037-1050
- DOI
  10.1007/s00209-011-0972-x
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740037, KAKENHI-PROJECT-22540098, KAKENHI-PROJECT-22540105
[Journal Article] On boundaries of coxeter groups and topological fractal structures2011
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Tsukuba Journal of Mathematics
  
  Volume: 35 Pages: 153-160
- NAID
  120006312317
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540098
[Journal Article] On non-sensitive home omorphisms of the boundary of a proper cocompact CAT(0) space2011
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Journal of Mathe matical Sciences
  
  Volume: 18, no.4(the University of Tokyo) Pages: 491-504
- NAID
  120005246000
- URL
  http://repository.dl.itc.u-tokyo.ac.jp/dspace/bitstream/2261/53538/1/jms180405.pdf
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540105
[Journal Article] On boundaries of Coxeter groups and topological fractal structures2011
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Tsukuba Journal of Mathematics
  
  Volume: 35 Pages: 153-160
- NAID
  120006312317
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740037
[Journal Article] On non-sensitive homeomorphisms of the boundary of a proper cocompact CAT(0) space2011
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  The University of Tokyo. Journal of Mathematical Sciences
  
  Volume: 18
- NAID
  120005246000
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540098
[Journal Article] On boundaries of Coxeter groups and topological fractal structures2011
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Tsukuba Journal of Mathematics
  
  Volume: 35
- NAID
  120006312317
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540098
[Journal Article] On boundaries of Coxe ter groups and topological fractal stru ctures2011
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Tsukuba Journal of Mathematics
  
  Volume: 35, no.2 Pages: 153-160
- URL
  http://projecteuclid.org/euclid.tkbjm/1331658700
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540105
[Journal Article] On Non-Sensitive Homeomorphisms of the Boundary of a Proper Cocompact CAT(0) Spaces2011
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Journal of Mathematical Sciences, the University of Tokyo
  
  Volume: 18 Pages: 491-504
- NAID
  120005246000
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740037
[Journal Article] On non-sensitive homeomorphisms of the boundary of a proper cocompact CAT(0) space2011
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Journal of Mathematical Sciences, The University of Tokyo
  
  Volume: 18 Pages: 491-504
- NAID
  120005246000
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740037
[Journal Article] CAT(0) groups and Coxeter groups whose boundaries are scrambled sets2010
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Journal of Pure and Applied Algebra
  
  Volume: 214 Pages: 919-936
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740037
[Journal Article] CAT(0)groups and Coxeter groups whose boundaries are scrambled sets2010
- Author(s)
  T.Hosaka
- Journal Title
  
  Journal of Pure and Applied Algebra 214
  
  Pages: 919-936
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740037
[Journal Article] Asymptotic dimension of proper CAT(0) spaces that are homeomorphic to the plane2010
- Author(s)
  Naotsugu Chinen, Tetsuya Hosaka
- Journal Title
  
  Canadian Mathematical Bulletin
  
  Volume: 53 Pages: 629-638
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540098
[Journal Article] Asymptotic Dimension of Proper CAT(0) Spaces that are Homeomorphic to the Plane2010
- Author(s)
  Naotsugu Chinen and Tetsuya Hosaka
- Journal Title
  
  Canadian Mathematical Bulletin
  
  Volume: 53
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540098
[Journal Article] Asymptotic Dimension of Proper CAT(0) Spaces that are Homeomorphic to the Plane2010
- Author(s)
  N.Chinen, T.Hosaka
- Journal Title
  
  Canadian Mathematical Bulletin
  
  Volume: 53 Pages: 629-638
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740037
[Journal Article] Asymptotic dimension of proper CAT(0) spaces which are homeomorphic to the plane2009
- Author(s)
  N. Chinen and T. Hosaka
- Journal Title
  
  Canadian Mathematical Bulletin (印刷中)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18740025
[Journal Article] Minimality of the boundary of a right-angled Coxeter system2009
- Author(s)
  T. Hosaka
- Journal Title
  
  Proceedings of the American Mathematical Society 137
  
  Pages: 899-910
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18740025
[Journal Article] Dense subsets of boundaries of CAT(0) groups2008
- Author(s)
  T. Hosaka
- Journal Title
  
  Houston Journal of Mathematics 34, no.4
  
  Pages: 1057-1063
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18740025
[Journal Article] Reflection groups of geodesic spaces and Coxeter groups2006
- Author(s)
  T.Hosaka
- Journal Title
  
  Topology and its Applications 153・11
- Data Source
  KAKENHI-PROJECT-16540067
[Journal Article] Reflection groups of geodesic spaces and Coxeter groups2006
- Author(s)
  T.Hosaka
- Journal Title
  
  Topology and its Applications 153(no.11)
  
  Pages: 1860-1866
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-16540067
[Journal Article] Reflection groups of geodesic spaces and Coxeter groups2006
- Author(s)
  T.Hosaka
- Journal Title
  
  Topology and its Applications 153
  
  Pages: 1860-1866
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-16540067
[Journal Article] Reflection groups of geodesic spaces and Coxeter groups2006
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Topology and its Applications 153・11
  
  Pages: 1860-1866
- Data Source
  KAKENHI-PROJECT-17540056
[Journal Article] Strong reflection rigidity of Coxeter systems of dihedral groups2005
- Author(s)
  T.Hosaka
- Journal Title
  
  Houston Journal of Mathematics 31(1)
  
  Pages: 37-41
- Data Source
  KAKENHI-PROJECT-16540067
[Journal Article] Addendum to "Dense subsets of the boundary of a Coxeter system"2005
- Author(s)
  T.Hosaka
- Journal Title
  
  Proceedings of the American Mathematical Society 133
  
  Pages: 3745-3747
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-16540067
[Journal Article] On dense orbits in the boundary of a Coxeter system2005
- Author(s)
  T.Hosaka
- Journal Title
  
  Journal of Mathematics of Kyoto University 45・3
  
  Pages: 627-631
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-16540067
[Journal Article] Strong reflection rigidity of Coxeter systems of dihedral groups2005
- Author(s)
  T.Hosaka
- Journal Title
  
  Houston Journal of Mathematics 31
  
  Pages: 37-41
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-16540067
[Journal Article] On dense orbits in the boundary of a Coxeter system2005
- Author(s)
  T.Hosaka
- Journal Title
  
  Journal of Mathematics of Kyoto University 45(no.3)
  
  Pages: 627-631
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-16540067
[Journal Article] Coxeter systems with two-dimensional Davis-Vinberg complexes2005
- Author(s)
  T.Hosaka
- Journal Title
  
  Journal of Pure and Applied Algebra 197・1-3
  
  Pages: 159-170
- Data Source
  KAKENHI-PROJECT-17540056
[Journal Article] Addendum to "Dense subsets of the boundary of a Coxeter systems"2005
- Author(s)
  T.Hosaka
- Journal Title
  
  Proceedings of the American Mathematical Society 133
  
  Pages: 3745-3747
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-16540067
[Journal Article] Coxeter systems with two-dimensional Davis-Vinverg complexes2005
- Author(s)
  T.Hosaka
- Journal Title
  
  Journal of Pure and Applied Algebra 197
  
  Pages: 159-170
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-16540067
[Journal Article] Coxeter systems with two-dimensional Davis-Vinberg complexes2005
- Author(s)
  T.Hosaka
- Journal Title
  
  Journal of Pure and Applied Algebra 197
  
  Pages: 159-170
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-16540067
[Journal Article] Strong reflection rigidity of Coxeter systems of dihedral groups2005
- Author(s)
  T.Hosaka
- Journal Title
  
  Houston Journal of Mathematics 31・1
  
  Pages: 37-41
- Data Source
  KAKENHI-PROJECT-17540056
[Journal Article] Dense subsets of the boundary of a Coxeter system2004
- Author(s)
  T.Hosaka
- Journal Title
  
  Proceedings of the American Mathematical Society 132
  
  Pages: 3441-3448
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-16540067
[Journal Article] The interior of the limit set of groups2004
- Author(s)
  T.Hosaka
- Journal Title
  
  Houston J.Math 30
  
  Pages: 705-721
- Data Source
  KAKENHI-PROJECT-16540067
[Journal Article] Dense subsets of the boundary of a Coxeter groups2004
- Author(s)
  T.Hosaka
- Journal Title
  
  Proceedings of the American Mathematical Society 132
  
  Pages: 3441-3448
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-16540067
[Journal Article] The interior of the limit set of groups2004
- Author(s)
  T.Hosaka
- Journal Title
  
  Houston Journal of Mathematics 30
  
  Pages: 705-721
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-16540067
[Journal Article] Dense subsets of the boundary of a Coxeter system2004
- Author(s)
  T.Hosaka
- Journal Title
  
  Proc.Amer.Math.Soc. 132
  
  Pages: 3441-3448
- Data Source
  KAKENHI-PROJECT-16540067
[Journal Article] Reconstructible graphs, simplicial flag complexes of homology manifolds and associated right-angled Coxeter groups
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Osaka Journal of Mathematics
  
  Volume: (印刷中)
- NAID
  120005830508
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740037
[Journal Article] On a new class of rigid Coxeter group
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Hokkaido Mathematical Journal
  
  Volume: (印刷中)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740037
[Journal Article] Asymptotic dimension of proper CAT(0) spaces which are homeomorphic to the plane
- Author(s)
  N. Chinen and T. Hosaka
- Journal Title
  
  Canadian Mathematical Bulletin (印刷中)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18740025
[Journal Article] On a new class of rigid Coxeter group
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Hokkaido Mathematical Journal
  
  Volume: (印刷中)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540098
[Journal Article] Addendum to "Dense subsets of the boundary of a Coxeter system"
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Proceedings of the American Mathematical Society (印刷中)
- Data Source
  KAKENHI-PROJECT-15740029
[Journal Article] Asymptotic dimension and boundary dimension of proper CAT(0) spaces
- Author(s)
  Naotsugu Chinen and Tetsuya Hosaka
- Journal Title
  
  Tsukuba Journal of Mathematics
  
  Volume: (印刷中)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540098
[Journal Article] On dense orbits in the boundary of a Coxeter system
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Journal of Mathematics of Kyoto University (印刷中)
- Data Source
  KAKENHI-PROJECT-15740029
[Journal Article] Dense subsets of boundaries of CAT(0) groups
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Houston Journal of Mathematics (印刷中)
- Data Source
  KAKENHI-PROJECT-18740025
[Journal Article] Reconstructible graphs, simplicial flag complexes of homology manifolds and associated right-angled Coxeter groups
- Author(s)
  Tetsuya Hosaka
- Journal Title
  
  Osaka Journal of Mathematics
  
  Volume: (印刷中)
- NAID
  120005830508
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540098
[Presentation] Reconstructible graphs, simplicial flag complexes of homology manifolds and associated right-angled Coxeter groups2014
- Author(s)
  Tetsuya Hosaka
- Organizer
  第49回位相空間論シンポジウム
- Place of Presentation
  京都工芸繊維大学（京都市）
- Year and Date
  2014-06-05
- Data Source
  KAKENHI-PROJECT-25800039
[Presentation] On equivariant homeomorphisms of boundaries of CAT(0) groups2013
- Author(s)
  Tetsuya Hosaka
- Organizer
  International Conference on Topology and Geometry 2013
- Place of Presentation
  Shimane University、Matsue、Japan
- Year and Date
  2013-08-05
- Data Source
  KAKENHI-PROJECT-22540105
[Presentation] Topological fractal structures of boundaries of Coxeter groups and CAT(0) groups2012
- Author(s)
  保坂哲也
- Organizer
  数理解析研究所研究集会「力学系とその周辺分野の研究」
- Place of Presentation
  京都大学数理解析研究所
- Year and Date
  2012-07-11
- Data Source
  KAKENHI-PROJECT-22540098
[Presentation] On structure of CAT(0) groups2012
- Author(s)
  保坂哲也
- Organizer
  数理解析研究所研究集会「一般位相幾何学および幾何学的トポロジーの現状と諸問題」
- Place of Presentation
  京都大学数理解析研究所
- Year and Date
  2012-09-27
- Data Source
  KAKENHI-PROJECT-22540098
[Presentation] Topological fractal structures of boundaries of Coxeter groups and CAT(0) groups2012
- Author(s)
  保坂哲也
- Organizer
  数理解析研究所研究集会「力学系とその周辺分野の研究」
- Place of Presentation
  京都大学数理解析研究所
- Year and Date
  2012-07-11
- Data Source
  KAKENHI-PROJECT-21740037
[Presentation] On structure of CAT(0) groups2012
- Author(s)
  保坂哲也
- Organizer
  数理解析研究所研究集会「一般位相幾何学および幾何学的トポロジーの現状と諸問題」
- Place of Presentation
  京都大学数理解析研究所
- Year and Date
  2012-09-27
- Data Source
  KAKENHI-PROJECT-21740037
[Presentation] On equivariant homeomorphisms of boundaries of CAT(0)groups2011
- Author(s)
  保坂哲也
- Organizer
  Rigidity School, Nara 2010/2011
- Place of Presentation
  奈良商工会議所
- Year and Date
  2011-03-05
- Data Source
  KAKENHI-PROJECT-21740037
[Presentation] On local connectivity of boundaries of CAT(0) spaces2011
- Author(s)
  保坂哲也
- Organizer
  数理解析研究所研究集会「一般及び幾何学的トポロジーとその応用」
- Place of Presentation
  京都大学数理解析研究所
- Year and Date
  2011-10-18
- Data Source
  KAKENHI-PROJECT-21740037
[Presentation] On equivariant homeomorphisms of boundaries of CAT(0) groups2011
- Author(s)
  保坂哲也
- Organizer
  Rigidity School, Nara 2010/2011
- Place of Presentation
  奈良商工会議所
- Year and Date
  2011-03-05
- Data Source
  KAKENHI-PROJECT-22540098
[Presentation] On equivariant homeomorphisms of boundaries of CAT(0)groups2011
- Author(s)
  保坂哲也
- Organizer
  Rigidity School, Nara 2010/2011
- Place of Presentation
  奈良商工会議所
- Year and Date
  2011-03-05
- Data Source
  KAKENHI-PROJECT-22540098
[Presentation] On local connectivity of boundaries of CAT(0) spaces2011
- Author(s)
  保坂哲也
- Organizer
  数理解析研究所研究集会「一般及び幾何学的トポロジーとその応用」
- Place of Presentation
  京都大学数理解析研究所(京都府)
- Year and Date
  2011-10-18
- Data Source
  KAKENHI-PROJECT-21740037
[Presentation] On equivariant homeomorphisms of boundaries of CAT(0) groups2011
- Author(s)
  Tetsuya Hosaka
- Organizer
  Rigidity School, Nara 2010/2011
- Place of Presentation
  奈良商工会議所
- Year and Date
  2011-03-05
- Data Source
  KAKENHI-PROJECT-21740037
[Presentation] Coxeter群のrank-one isometryとその境界について2010
- Author(s)
  保坂哲也
- Organizer
  第45回位相空間論シンポジウム
- Place of Presentation
  大阪府立大学理学部サイエンスホール
- Year and Date
  2010-06-05
- Data Source
  KAKENHI-PROJECT-21740037
[Presentation] On equivariant homeomorphisms of boundaries of CAT(0) groups2010
- Author(s)
  保坂哲也
- Organizer
  数理解析研究所研究集会「一般位相幾何学及び幾何学的トポロジーの最近の話題とその応用」
- Place of Presentation
  京都大学数理解析研究所
- Year and Date
  2010-10-13
- Data Source
  KAKENHI-PROJECT-21740037
[Presentation] On equivariant homeomorphisms of boundaries of CAT(0)groups2010
- Author(s)
  保坂哲也
- Organizer
  一般位相幾何学及び幾何学的トポロジーの最近の話題とその応用
- Place of Presentation
  京都大学数理解析研究所
- Year and Date
  2010-10-13
- Data Source
  KAKENHI-PROJECT-22540098
[Presentation] On equivariant homeomorphisms of boundaries of CAT(0) groups2010
- Author(s)
  保坂哲也
- Organizer
  数理解析研究所研究集会「一般位相幾何学及び幾何学的トポロジーの最近の話題とその応用」
- Place of Presentation
  京都大学数理解析研究所
- Year and Date
  2010-10-13
- Data Source
  KAKENHI-PROJECT-22540098
[Presentation] Coxeter群のrank-one isometryとその境界について2010
- Author(s)
  保坂哲也
- Organizer
  第45回位相空間論シンポジウム
- Place of Presentation
  大阪府立大学理学部サイエンスホール
- Year and Date
  2010-06-05
- Data Source
  KAKENHI-PROJECT-22540098
[Presentation] Coxeter群の rank-one isometry とその境界について2010
- Author(s)
  保坂哲也
- Organizer
  第45回位相空間論シンポジウム
- Place of Presentation
  大阪府立大学理学部サイエンスホール
- Year and Date
  2010-06-05
- Data Source
  KAKENHI-PROJECT-22540098
[Presentation] On equivariant homeomorphisms of boundaries of CAT(0)groups2010
- Author(s)
  保坂哲也
- Organizer
  数理解析研究所研究集会「一般位相幾何学及び幾何学的トポロジーの最近の話題とその応用」
- Place of Presentation
  京都大学数理解析研究所
- Year and Date
  2010-10-13
- Data Source
  KAKENHI-PROJECT-21740037
[Presentation] On isometry groups of CAT(0) spaces2009
- Author(s)
  T. Hosaka
- Organizer
  「同相群とその周辺」研究会
- Place of Presentation
  京都産業大学
- Year and Date
  2009-02-21
- Data Source
  KAKENHI-PROJECT-18740025
[Presentation] On rank-one isometries of right-angled Coxeter groups and their boundaries2009
- Author(s)
  保坂哲也
- Organizer
  数理解析研究所研究集会「一般位相幾何学及び幾何学的トポロジーに関する研究」
- Place of Presentation
  京都大学楽友会館
- Year and Date
  2009-10-15
- Data Source
  KAKENHI-PROJECT-21740037
[Presentation] On isometry groups of CAT(0)spaces2009
- Author(s)
  保坂哲也
- Organizer
  「同相群とその周辺」研究会
- Place of Presentation
  京都産業大学
- Year and Date
  2009-02-21
- Data Source
  KAKENHI-PROJECT-18740025
[Presentation] Minimality and scrambled sets of boundaries of CAT(0) groups2008
- Author(s)
  T. Hosaka
- Organizer
  リーマン幾何と幾何解析
- Place of Presentation
  筑波大学
- Year and Date
  2008-02-19
- Data Source
  KAKENHI-PROJECT-18740025
[Presentation] On the boundary of a CAT(0) space on which a group acts geometrically2008
- Author(s)
  T. Hosaka
- Organizer
  リーマン面不連続群論研究集会 -Conference on Riemann surfaces and discrete groups-
- Place of Presentation
  岡山大学
- Year and Date
  2008-01-14
- Data Source
  KAKENHI-PROJECT-18740025
[Presentation] CAT(0) groups whose boundaries are scrambled sets2007
- Author(s)
  Tetsuya Hosaka
- Organizer
  一般および幾何学的トポロジーの現状と諸問題
- Place of Presentation
  京都大学数理解析研究所
- Year and Date
  2007-10-18
- Data Source
  KAKENHI-PROJECT-19540085
[Presentation] CAT(0) groups whose boundaries are scrambled sets, 一般および幾何学的トポロジーの現状と諸問題2007
- Author(s)
  T. Hosaka
- Place of Presentation
  京都大学数理解析研究所
- Year and Date
  2007-10-18
- Data Source
  KAKENHI-PROJECT-18740025
[Presentation] Minimality and scrambled sets of boundaries of CAT(0) groups2007
- Author(s)
  T. Hosaka
- Organizer
  International Conference on Topology and its Applications 2007 at Kyoto
- Place of Presentation
  京都大学
- Year and Date
  2007-12-05
- Data Source
  KAKENHI-PROJECT-18740025
[Presentation] On minimality of the boundary of a Coxeter system, 一般位相幾何学及び幾何学的トポロジーとその応用2007
- Author(s)
  T. Hosaka
- Place of Presentation
  京都大学数理解析研究所
- Year and Date
  2007-10-18
- Data Source
  KAKENHI-PROJECT-18740025
[Presentation] CAT(0)groups whose boundaries are scrambled sets2007
- Author(s)
  Tetsuya Hosaka
- Organizer
  一般および幾何学的トポロジーの現状と諸問題
- Place of Presentation
  数理解析研究所
- Year and Date
  2007-10-18
- Data Source
  KAKENHI-PROJECT-19540085
[Presentation] Minimality and scrambled sets of boundaries of CAT (0) groups2007
- Author(s)
  保坂哲也
- Organizer
  International Conference on Topology and its Applications 2007 at Kyoto
- Place of Presentation
  京都大学理学部3号館
- Year and Date
  2007-12-05
- Data Source
  KAKENHI-PROJECT-18740025
[Presentation] Minimality of the boundary of a right-angled Coxeter system2006
- Author(s)
  T. Hosaka
- Organizer
  Rigidity School, Nagoya 2006
- Place of Presentation
  名古屋大学
- Year and Date
  2006-09-28
- Data Source
  KAKENHI-PROJECT-18740025
[Presentation] Topological fractal structures of boundaries of Coxeter groups and CAT(0) groups
- Author(s)
  保坂哲也
- Organizer
  数理解析研究所研究集会「力学系とその周辺分野の研究」
- Place of Presentation
  京都大学数理解析研究所（京都府）
- Data Source
  KAKENHI-PROJECT-21740037
[Presentation] On equivariant homeomorphisms of boundaries　of CAT(0) groups and Coxeter groups
- Author(s)
  Tetsuya Hosaka
- Organizer
  International Conference on Topology and　Geometry 2013 in Matsue
- Place of Presentation
  島根大学（島根県）
- Invited
- Data Source
  KAKENHI-PROJECT-25800039
[Presentation] On structure of CAT(0) groups
- Author(s)
  保坂哲也
- Organizer
  数理解析研究所研究集会「一般位相幾何学および幾何学的トポロジーの現状と諸問題」
- Place of Presentation
  京都大学数理解析研究所（京都府）
- Data Source
  KAKENHI-PROJECT-21740037
[Presentation] On equivariant homeomorphisms of boundaries of CAT(0) groups and Coxeter groups
- Author(s)
  Tetsuya Hosaka
- Organizer
  京都大学数理解析研究所研究集会「集合論的及び幾何学的トポロジーの現状とその展望」
- Place of Presentation
  京都大学数理解析研究所（京都府）
- Data Source
  KAKENHI-PROJECT-25800039

1. KOYAMA Akira (40116158)

# of Collaborated Projects: 6 results

# of Collaborated Products: 0 results
2. CHINEN Naotsugu (20370067)

# of Collaborated Projects: 5 results

# of Collaborated Products: 4 results
3. YAGASAKI Tatsuhiko (40191077)

# of Collaborated Projects: 4 results

# of Collaborated Products: 0 results
4. KATO Hisao (70152733)

# of Collaborated Projects: 3 results

# of Collaborated Products: 0 results
5. YOKOI Katsuya (90240184)

# of Collaborated Projects: 3 results

# of Collaborated Products: 0 results
6. FUKUI Kazuhiko (30065883)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
7. SAKAI Katsuro (50036084)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
8. OKURA Hiroyuki (80135649)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
9. KIMURA Makoto (30186332)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
10. HATTORI Yasunao (20144553)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
11. FURUMOCHI Tetsuo (40039128)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
12. EDA Katsuya (90015826)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
13. MAITANI Fumio (10029340)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
14. TSUKAMOTO Chiaki (80155340)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
15. MINE Kotaro (90512525)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
16. YAMADA Takumi (40403117)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
17. TOMOYASU Kazuo (10332107)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
18. SAKAI Kazuhiro (30205702)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
19. KITAGAWA Yoshihisa (20144917)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
20. FUJIHIRA Hideyuki (70114171)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
21. MAEDA Sadahiro (40181581)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
22. AKITA Toshiyuki (30279252)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
23. IZEKI Hiroyasu (90244409)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
24. HIROSE Susumu (10264144)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
25. KAWAZUMI Nariya (30214646)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
26. OHMOTO Toru (20264400)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
27. 木村寛 (70017953)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
28. 落合昭二 (30031545)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
29. 江森英世 (90267526)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results

Hosaka Tetsuya 保坂 哲也

HOSAKA Tetsuya 保坂 哲也

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群の作用する非正曲率空間および無限コクセター群と有限グラフの研究Principal InvestigatorOngoing

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Research on spaces of non-positive curvature, their isometry groups and Coxeter groupsPrincipal Investigator

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Research on spaces of non-positive curvature with group actions and Coxeter groupsPrincipal Investigator

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Study on Coxeter groups and spaces of non-positive curvaturePrincipal Investigator

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無限Coxeter群の幾何学的研究Principal Investigator

Hosaka Tetsuya 保坂哲也

HOSAKA Tetsuya 保坂哲也