Detailed Information

Research Topics and Results

• Homogeneous Lagrangian foliations on complex space forms 2023/02
• Equivariant realizations of Hermitian symmetric space of noncompact type 2022/03
• On local isometric embeddings of three-dimensional Lie groups 2020/04
• Realizations of some contact metric manifolds as Ricci soliton real hypersurfaces 2018/01
• Three-dimensional solvsolitons and the minimality of the corresponding submanifolds 2017/06
• A class of non-compact homogeneous Lagrangian submanifolds in complex hyperbolic spaces 2017/01

Original Articles

• Homogeneous Lagrangian foliations on complex space forms;　2023/02
  ANNOUNCEMENT INFO.;　Proceedings of the American Mathematical Society , 151, 823 - 833
  AUTHOR;　Jose Carlos Diaz-Ramos, Miguel Dominguez Vazquez, Takahiro Hashinaga
  
• A Lie theoretic interpretation of realizations of some contact metric manifolds;　2022/05
  ANNOUNCEMENT INFO.;　New Horizons in Differential Geometry and its Related Fields, 71 - 90.
  AUTHOR;　Takahiro Hashinaga, Akira Kubo, Yuichiro Taketomi, Hiroshi Tamaru
  
• Equivariant realizations of Hermitian symmetric space of noncompact type;　2022/03
  ANNOUNCEMENT INFO.;　Mathematische Zeitschrift, 300, 2363 - 2411
  AUTHOR;　Takahiro Hashinaga, Toru Kajigaya
  
• On local isometric embeddings of three-dimensional Lie groups;　2020/04
  ANNOUNCEMENT INFO.;　, 205, 191 - 219
  AUTHOR;　Yoshio Agaoka; Takahiro Hashinaga
  
• Construction of noncompact Lagrangian orbits in some Hermitian symmetric spaces of noncompact type;　2019
  ANNOUNCEMENT INFO.;　, 29 - 44
  AUTHOR;　Takahiro Hashinaga
  
• Realizations of some contact metric manifolds as Ricci soliton real hypersurfaces;　2018/01
  ANNOUNCEMENT INFO.;　JOURNAL OF GEOMETRY AND PHYSICS, 123, 221 - 234
  AUTHOR;　Jong Taek Cho; Takahiro Hashinaga; Akira Kubo; Yuichiro Taketomi; Hiroshi Tamaru
  
• Three-dimensional solvsolitons and the minimality of the corresponding submanifolds;　2017/06
  ANNOUNCEMENT INFO.;　INTERNATIONAL JOURNAL OF MATHEMATICS, 28, 6, 31 pp
  AUTHOR;　Takahiro Hashinaga; Hiroshi Tamaru
  
• A class of non-compact homogeneous Lagrangian submanifolds in complex hyperbolic spaces;　2017/01
  ANNOUNCEMENT INFO.;　ANNALS OF GLOBAL ANALYSIS AND GEOMETRY, 51, 1, 21 - 33
  AUTHOR;　Takahiro Hashinaga; Toru Kajigaya
  
• The solvable models of noncompact real two-plane grassmannians and some applications;　2017
  ANNOUNCEMENT INFO.;　Springer Proceedings in Mathematics and Statistics, 203, 311 - 321
  AUTHOR;　Jong Taek Cho; Takahiro Hashinaga; Akira Kubo; Yuichiro Taketomi; Hiroshi Tamaru
  
• HOMOGENEOUS RICCI SOLITON HYPERSURFACES IN THE COMPLEX HYPERBOLIC SPACES;　2016/12
  ANNOUNCEMENT INFO.;　TOHOKU MATHEMATICAL JOURNAL, 68, 4, 559 - 568
  AUTHOR;　Takahiro Hashinaga; Akira Kub; Hiroshi Tamaru
  
• Milnor-type theorems for left-invariant Riemannian metrics on Lie groups;　2016/04
  ANNOUNCEMENT INFO.;　JOURNAL OF THE MATHEMATICAL SOCIETY OF JAPAN, 68, 2, 669 - 684
  AUTHOR;　Takahiro Hashinaga; Hiroshi Tamaru; Kazuhiro Terada
  
• On the minimality of the corresponding submanifolds to four-dimensional solvsolitons;　2014/07
  ANNOUNCEMENT INFO.;　HIROSHIMA MATHEMATICAL JOURNAL, 44, 2, 173 - 191
  AUTHOR;　Takahiro Hashinaga
  
• SOME TOPICS OF HOMOGENEOUS SUBMANIFOLDS IN COMPLEX HYPERBOLIC SPACES;　2014
  ANNOUNCEMENT INFO.;　DIFFERENTIAL GEOMETRY OF SUBMANIFOLDS AND ITS RELATED TOPICS, 230 - 244
  AUTHOR;　Takahiro Hashinaga; Akira Kubo; Hiroshi Tamaru