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永野幸一

Nagano, Koichi

数理物質系 , 准教授
Institute of Pure and Applied Sciences , Associate Professor

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1. Two-dimensional metric spaces with curvature bounded above, I Nagano, Koichi; Shioya, Takashi; Yamaguchi, Takao
GEOMETRY & TOPOLOGY 28: 3023 (2024)
2. CAT(0) 4-manifolds are Euclidean Lytchak, Alexander; Nagano, Koichi; Stadler, Stephan
GEOMETRY & TOPOLOGY 28: 3285 (2024)
3. Asymptotic topological regularity of CAT(0) spaces Nagano, Koichi
Annals of Global Analysis and Geometry 61: 427 (2022) Semantic Scholar
4. Volume pinching theorems for CAT(1) spaces Nagano, Koichi
American Journal of Mathematics 144: 267 (2022)
5. Topological regularity of spaces with an upper curvature bound Lytchak, Alexander; Nagano, Koichi
Journal of the European Mathematical Society 24: 137 (2022) Semantic Scholar
6. Geodesically complete spaces with an upper curvature bound Lytchak, Alexander; Nagano, Koichi
Geometric and Functional Analysis 29: 295 (2019) Semantic Scholar
7. Free construction of CAT(1) spaces Nagano, Koichi
Archiv der Mathematik 88: 173--180 (2007)
8. Fixed point sets of parabolic isometries of CAT(0)-spaces Fujiwara, Koji; Nagano, Koichi; Shioya, Takashi
Commentarii Mathematici Helvetici 81: 305--335 (2006)
9. 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: 55--68 (2005)
10. A sphere theorem for 2-dimensional CAT(1)-spaces Nagano, Koichi
Pacific Journal of Mathematics 206: 401--423 (2002)
11. A volume convergence theorem for Alexandrov spaces with curvature bounded above Nagano, Koichi
Mathematisches Zeitschrift 241: 127--163 (2002)
12. Asymptotic rigidity of Hadamard 2-spaces Nagano, Koichi
Journal of the Mathematical Society of Japan 52: 699--723 (2000) Semantic Scholar