NAGANO Koichi
- Affiliation
- Institute of Pure and Applied Sciences
- Official title
- Associate Professor
- Research fields
Geometry - Research keywords
Riemannian geometry Riemannian manifold CAT(k) space Alexandrov space Homology manifold - Research projects
Study of the geometric structure of geodesically complete metric spaces with curvature bounded above 2020-04 -- 2025-03 NAGANO Koichi Japan Society for the Promotion of Science/Grant-in-Aid for Scientific Research(C) 4,550,000Yen Developments of the geometric topology of homology manifolds with curvature bounded above 2014-04 -- 2018-03 NAGANO Koichi Japan Society for the Promotion of Science/Grant-in-Aid for Challenging Exploratory Research 1,950,000Yen Geometric topology of spaces with curvature bounded above 2009-04 -- 2013-03 NAGANO Koichi Japan Society for the Promotion of Science/Grant-in-Aid for Young Scientists(B) 4,290,000Yen Study of the topological structure of metric spaces of non-positive curvature 2006-04 -- 2009-03 NAGANO Koichi Japan Society for the Promotion of Science/Grant-in-Aid for Young Scientists(B) 3,830,000Yen - Career history
2023-08 -- (current) University of TsukubaInstitute of Pure and Applied Sciences, Department of MathematicsAssociate Professor 2007-02 -- 2023-07 University of TsukubaInstitute of MathematicsAssistant Professor 2001-04 -- 2007-01 Tohoku UniversityMathematical InstituteResearch Associate 2004-04 -- 2006-03 2004 JSPSPostdoctoral Fellow for Research Abroad 2000-01 -- 2001-03 2000 JSPSDoctoral Fellow (DC2) - Degree
2001-03 Doctor of Mathematics Kyushu University - Academic societies
-- (current) 日本数学会 - Articles
- Asymptotic topological regularity of CAT(0) spaces
Nagano Koichi
Annals of Global Analysis and Geometry/61(2)/pp.427-457, 2022-03 - Volume pinching theorems for CAT(1) spaces
Nagano Koichi
American Journal of Mathematics/144(1)/pp.267-285, 2022-02 - Topological regularity of spaces with an upper curvature bound
Lytchak Alexander; Nagano Koichi
Journal of the European Mathematical Society/24(1)/pp.137-165, 2022 - Geodesically complete spaces with an upper curvature bound
Lytchak Alexander; Nagano Koichi
Geometric and Functional Analysis/29(1)/pp.295-342, 2019 - Free construction of CAT(1) spaces
Nagano Koichi
Archiv der Mathematik/88/p.173--180, 2007-01 - Fixed point sets of parabolic isometries of CAT(0)-spaces
Fujiwara Koji; Nagano Koichi; Shioya Takashi
Commentarii Mathematici Helvetici/81/p.305--335, 2006-01 - The asymptotic cones of manifolds of roughly non-negative radial curvature
Mashiko Yukihiro; Nagano Koichi; Otsuka Kazuo
Journal of the Mathematical Society of Japan/57/p.55--68, 2005-01 - A sphere theorem for 2-dimensional CAT(1)-spaces
Nagano Koichi
Pacific Journal of Mathematics/206/p.401--423, 2002-01 - A volume convergence theorem for Alexandrov spaces with curvature bounded above
Nagano Koichi
Mathematisches Zeitschrift/241/p.127--163, 2002-01 - Asymptotic rigidity of Hadamard 2-spaces
Nagano Koichi
Journal of the Mathematical Society of Japan/52/p.699--723, 2000-01
- Asymptotic topological regularity of CAT(0) spaces
- Books
- On Geometry of Spaces with Curvature Bounded Above
永野幸一
2001-03
- On Geometry of Spaces with Curvature Bounded Above
- Teaching
2024-04 -- 2024-08 Research in Geometry IB University of Tsukuba. 2024-10 -- 2025-02 Research in Geometry IIA University of Tsukuba. 2024-10 -- 2025-02 Research in Geometry IA University of Tsukuba. 2024-04 -- 2024-08 Research in Geometry IIIB University of Tsukuba. 2024-04 -- 2024-08 Seminar on Mathematics University of Tsukuba. 2024-10 -- 2025-02 Seminar on Mathematics University of Tsukuba. 2024-04 -- 2024-08 Geometry I University of Tsukuba. 2024-04 -- 2024-08 Research in Geometry IIIA University of Tsukuba. 2024-10 -- 2025-02 Research in Geometry VA University of Tsukuba. 2024-04 -- 2024-08 Research in Geometry VB University of Tsukuba. more...
(Last updated: 2024-09-19)