Nagano Koichi

J-GLOBAL         Last updated: Oct 17, 2019 at 02:41
 
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Name
Nagano Koichi
Affiliation
University of Tsukuba
Section
Faculty of Pure and Applied Sciences
Job title
Assistant Professor

Research Areas

 
 

Academic & Professional Experience

 
Feb 2007
   
 
Assistant Professor, Institute of Mathematics, University of Tsukuba
 
Apr 2001
 - 
Jan 2007
Research Associate, Mathematical Institute, Tohoku University
 
Apr 2004
 - 
Mar 2006
Postdoctoral Fellow for Research Abroad, 2004 JSPS
 
Jan 2000
 - 
Mar 2001
Doctoral Fellow (DC2), 2000 JSPS
 

Education

 
Apr 1992
 - 
Mar 1996
Department of Mathematics, Faculty of Science and Technology, Waseda University
 
Apr 1998
 - 
Mar 2001
Mathematics, Graduate School of Mathematics, Kyushu University
 
Apr 1996
 - 
Mar 1998
Mathematics, Grtaduate School of Mathematics, Kyushu University
 

Published Papers

 
Lytchak, Alexander;Nagano, Koichi
Geometric and Functional Analysis   29(1) 295-342   2019   [Refereed]
We study geometric and topological properties of locally compact, geodesically complete spaces with an upper curvature bound. We control the size of singular subsets, discuss homotopical and measure-theoretic stratifications and regularity of the ...
Free construction of CAT(1) spaces
Nagano, Koichi
Archiv der Mathematik   88 173--180   Jan 2007   [Refereed]
Fixed point sets of parabolic isometries of CAT(0)-spaces
Fujiwara, Koji;Nagano, Koichi;Shioya, Takashi
Commentarii Mathematici Helvetici   81 305--335   Jan 2006   [Refereed]
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   Jan 2005   [Refereed]
A sphere theorem for 2-dimensional CAT(1)-spaces
Nagano, Koichi
Pacific Journal of Mathematics   206 401--423   Jan 2002   [Refereed]
A volume convergence theorem for Alexandrov spaces with curvature bounded above
Nagano, Koichi
Mathematisches Zeitschrift   241 127--163   Jan 2002   [Refereed]
Asymptotic rigidity of Hadamard 2-spaces
Nagano, Koichi
Journal of the Mathematical Society of Japan   52 699--723   Jan 2000   [Refereed]

Books etc

 
On Geometry of Spaces with Curvature Bounded Above
Nagano,Koichi
Mar 2001   

Research Grants & Projects

 
Geometric topology of spaces with an upper curvature bound
Grant-in-Aid for Scientific Research
Project Year: Apr 2009 - Mar 2012
Study of Topological Structure of Metric Spaces of Non-Positive Curvature
Grant-in-Aid for Scientific Research
Project Year: Apr 2006 - Mar 2009