Concurrent Post
-
Faculty of Political Science and Economics School of Political Science and Economics
Details of a Researcher
Updated on 2023/02/01
Faculty of Political Science and Economics School of Political Science and Economics
Waseda Research Institute for Science and Engineering Concurrent Researcher
Columbia University Graduate School of Arts and Sciences Department of Mathematics
The University of Tokyo
The University of Tokyo Faculty of Science Department of Mathematics
Doctor of Philosophy
Master of Science
Waseda University Faculty of Science and Engineering Professor
Tokyo Institute of Technology School of Computing Professor
Tokyo Institute of Technology Graduate School of Information Science and Engineering Professor
Tokyo Institute of Technology School of Science Associate Professor
Tokyo Metropolitan University Faculty of Science Associate Professor
Tokyo Metropolitan University Faculty of Science Research Associate
American Mathematical Society
日本数学会
日本応用数理学会
Geometry
On the moduli space of equilateral pentagons
S. Klaus, S. Kojima
Beitr. Algebra Geom. 60 487 - 497 2019 [Refereed]
Normalize entropy versus volume for pseudo-Anosovs
S. Kojima, G. McShane
Geom. & Topol 22 2403 - 2426 2018 [Refereed]
Minimal dilatations of pseudo-Anosovs generated by the magic 3-manifold and their asymptotic behevior
E. Kin, S. Kojima, M. Takasawa
Algebr. Geom. Topol. 13 3537 - 3602 2013 [Refereed]
ENTROPY, WEIL-PETERSSON TRANSLATION DISTANCE AND GROMOV NORM FOR SURFACE AUTOMORPHISMS
Sadayoshi Kojima
PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY 140 ( 11 ) 3993 - 4002 2012.11 [Refereed]
Circle packings on surfaces with projective structures : A survey
Sadayoshi Kojima, Shigeru Mizushima, Ser Peow Tan
LMS Lecture Notes Series 329 337 - 353 2006 [Refereed]
Circle packings on surfaces with projective structures
S Kojima, S Mizushima, SP Tan
JOURNAL OF DIFFERENTIAL GEOMETRY 63 ( 3 ) 349 - 397 2003.03 [Refereed]
Configuration spaces of points on the circle and hyperbolic Dehn fillings, II
Y Yamashita, H Nishi, S Kojima
GEOMETRIAE DEDICATA 89 ( 1 ) 143 - 157 2002.02 [Refereed]
Complex hyperbolic cone structures on the configuration spaces
SADAYOSHI KOJIMA
Rend. Istit. Mat.. Univ. Trieste 32 149 - 163 2001 [Refereed]
Configuration spaces of points on the circle and hyperbolic Dehn fillings
S Kojima, H Nishi, Y Yamashita
TOPOLOGY 38 ( 3 ) 497 - 516 1999.05 [Refereed]
Deformations of hyperbolic 3-cone-manifolds
S Kojima
JOURNAL OF DIFFERENTIAL GEOMETRY 49 ( 3 ) 469 - 516 1998.07 [Refereed]
Flexible boundaries in deformations of hyperbolic 3-manifolds
M Fujii, S Kojima
OSAKA JOURNAL OF MATHEMATICS 34 ( 3 ) 541 - 551 1997.09 [Refereed]
Immersed Geodesic Surfaces in Hyperbolic 3-Manifolds
SADAYOSHI KOJIMA
Complex Variables 29 45 - 58 1996 [Refereed]
SHAPES OF STARS
S KOJIMA, Y YAMASHITA
PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY 117 ( 3 ) 845 - 851 1993.03 [Refereed]
HOMOTOPY INVARIANTS OF NONORIENTABLE 4-MANIFOLDS
MH KIM, S KOJIMA, F RAYMOND
TRANSACTIONS OF THE AMERICAN MATHEMATICAL SOCIETY 333 ( 1 ) 71 - 81 1992.09 [Refereed]
APOLLONIAN PACKINGS AND HYPERBOLIC GEOMETRY
M ISHIDA, S KOJIMA
GEOMETRIAE DEDICATA 43 ( 3 ) 265 - 283 1992.09 [Refereed]
Polyhedral decomposition of hyperbolic 3-manifolds with totally geodesic boundary
SADAYOSHI KOJIMA
Advanced Study in Pure Math. 20 93 - 112 1992 [Refereed]
THE SMALLEST HYPERBOLIC 3-MANIFOLDS WITH TOTALLY GEODESIC BOUNDARY
S KOJIMA, Y MIYAMOTO
JOURNAL OF DIFFERENTIAL GEOMETRY 34 ( 1 ) 175 - 192 1991.07 [Refereed]
Polyhedral decomposition of hyperbolic manifolds with boundary
SADAYOSHI KOJIMA
Proceedings of workshop in Pure Mathematics, Seoul N. Univ. 10 ( part iii ) 37 - 57 1990 [Refereed]
ISOMETRY TRANSFORMATIONS OF HYPERBOLIC 3-MANIFOLDS
S KOJIMA
TOPOLOGY AND ITS APPLICATIONS 29 ( 3 ) 297 - 307 1988.08 [Refereed]
Virtual Betti numbers of some hyperbolic 3-manifolds
D. D. Long, S. Kojima
A Fate of Topology, Acadmic Press 417 - 437 1988 [Refereed]
FINITE COVERS OF 3-MANIFOLDS CONTAINING ESSENTIAL SURFACES OF EULER CHARACTERISTIC = 0
S KOJIMA
PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY 101 ( 4 ) 743 - 747 1987.12 [Refereed]
BOUNDING FINITE-GROUPS ACTING ON 3-MANIFOLDS
S KOJIMA
MATHEMATICAL PROCEEDINGS OF THE CAMBRIDGE PHILOSOPHICAL SOCIETY 96 ( SEP ) 269 - 281 1984 [Refereed]
A CONSTRUCTION OF GEOMETRIC STRUCTURES ON SEIFERT FIBERED-SPACES
S KOJIMA
JOURNAL OF THE MATHEMATICAL SOCIETY OF JAPAN 36 ( 3 ) 483 - 495 1984 [Refereed]
MILNOR MU-BAR-INVARIANTS, MASSEY PRODUCTS AND WHITNEY TRICK IN 4 DIMENSIONS
S KOJIMA
TOPOLOGY AND ITS APPLICATIONS 16 ( 1 ) 43 - 60 1983 [Refereed]
NILPOTENT COMPLETIONS AND LIE-RINGS ASSOCIATED TO LINK GROUPS
S KOJIMA
COMMENTARII MATHEMATICI HELVETICI 58 ( 1 ) 115 - 134 1983 [Refereed]
ALGEBRAIC CLASSIFICATION OF LINKING PAIRINGS ON 3-MANIFOLDS
A KAWAUCHI, S KOJIMA
MATHEMATISCHE ANNALEN 253 ( 1 ) 29 - 42 1980 [Refereed]
Some new invariants of links
S. Kojima, M. Yamasaki
Inventiones math. 54 213 - 228 1979 [Refereed]
The Matsumoto tripling for compact simply connected 4-manifolds
M. Kato, S. Kojima, T. Ohkawa, M. Yamasaki
Tohoku Math. J. 31 525 - 535 1979 [Refereed]
Piecewise linear Dehn's lemma in 4-dimensions
SADAYOSHI KOJIMA
Proceedings of Japan Academy 55 65 - 67 1979 [Refereed]
Classification of simple knots by Levine pairings
SADAYOSHI KOJIMA
Comment. Math. Helvetici 54 356 - 367 1979 [Refereed]
A classification of some even dimensional fibered knots
SADAYOSHI KOJIMA
J. Fac. Sci. Univ. Tokyo 24 671 - 683 1977 [Refereed]
Circle packing and Teichmuller space
European Mathematical Society Publishing House 2008 ISBN: 3037190558
3次元の幾何学
朝倉書店 2002
多角形の現代幾何学 増補版
牧野書店 1999
トポロジー入門
共立出版株式会社 1998
Flexible boundaries in deformations of hyperbolic 3-manifolds(Analysis of Discrete Groups)
FUJII Michihiko, KOJIMA Sadayoshi
RIMS Kokyuroku 967 71 - 82 1996.10
FUJII Michihiko, KOJIMA Sadayoshi
RIMS Kokyuroku 882 1 - 10 1994.08
幾何学賞
2000
Geometric Structures on 3-manifolds
Hyperbolic Geometry
3次元多様体の幾何構造
双曲幾何学
A numerical algorithm for block-diagonal decomposition of matrix *-algebra
HPOPT 2008
Presentation date: 2008
Entropy vs volume
KIAS Workshop on Hyperbolic Geometry and Related Topics
Presentation date: 2008
ポアンカレ予想について
日本応用数理学会春の研究部会総合発表会
Presentation date: 2008
A numerical algorithm for block-diagonal decomposition of matrix *-algebra
HPOPT 2008
Presentation date: 2008
ポアンカレ予想と幾何化予想
数理物理2008「リッチフローの微分幾何と位相幾何」
Presentation date: 2008
ポアンカレ予想について
静岡大学理学講演会
Presentation date: 2008
ポアンカレ予想と幾何化予想ートポロジーの100年ー
奈良女子大学数物情交流シンポジウム
Presentation date: 2008
Entropy vs volume
KIAS Workshop on Hyperbolic Geometry and Related Topics
Presentation date: 2008
Comparison of hyperbolic volume with other invariants
Workshop on hyperbolic structures on 3-manifolds and large scale geometry of Teichmuller space
Presentation date: 2007
Packings on surfaces I
ISM Symposium, Packing and Random Packing
Presentation date: 2006
Packings on projective Riemann surfaces
Teichmuller spaces (Classical and Quantum)
Presentation date: 2006
Quasi-isometry of invariants
Presentation date: 2006
Packings on surfaces I
ISM Symposium, Packing and Random Packing
Presentation date: 2006
Packings on projective Riemann surfaces
Teichmuller spaces (Classical and Quantum)
Presentation date: 2006
The Dehn filling space of a certain hyperbolic 3-orbifold
Discrete Geometric Analysis
Presentation date: 2004
Nonsingular parts of hyperbolic 3-cone-manifolds
Topology and Teichm\"uller Spaces
Presentation date: 1996
Determining knots by branched covers
Low-dimensional Topology and Kleinian Groups
Presentation date: 1986
Survey of Modern Mathematical Sciences B
School of Fundamental Science and Engineering
2022 spring quarter
Foundations of Set Theory [S Grade]
School of Fundamental Science and Engineering
2022 spring semester
Survey of Modern Mathematical Sciences A [S Grade]
School of Fundamental Science and Engineering
2022 winter quarter
Survey of Modern Mathematical Sciences A
School of Fundamental Science and Engineering
2022 winter quarter
Survey of Modern Mathematical Sciences B [S Grade]
School of Fundamental Science and Engineering
2022 spring quarter
Foundations of Analysis 2 [S Grade]
School of Fundamental Science and Engineering
2022 spring semester
Master's Thesis (Department of Pure and Applied Mathematics)
Graduate School of Fundamental Science and Engineering
2022 full year
Mathematical Society of Japan Auditor
Science Council of Japan Collaborative member
Japan Society for the Promotion of Sciences RCSS Program Officer
Mathematical Society of Japan Trastee
Mathematical Society of Japan President
Citation count denotes the number of citations in papers published for a particular year.