Takashi TSUBOI

J-GLOBAL         Last updated: Aug 28, 2019 at 11:24
Takashi TSUBOI
Musashino University
Faculty of Engineering Department of Mathematical Engineering
Job title
Ph. D(The University of Tokyo)

Awards & Honors

Geometry Prize, Mathematical Society of Japan

Published Papers

Proc Am Math Soc   141(5) 1839-1847   May 2013
We show that any element of the identity component Homeo(Sn)0 of the group of homeomorphisms of the n-dimensional sphere Sn can be written as one commutator. We also show that any element of the group Homeo(μn) of homeomorphisms of the n-dimension...
OHTA Yoshihiro,NISHIYAMA Akinobu,WADA Yoichiro,RUAN Yijun,KODAMA Tatsuhiko,TSUBOI Takashi,TOKIHIRO Tetsuji,IHARA Sigeo
Phys Rev E Stat Nonlinear Soft Matter Phys   86(2,Pt.1) 1-21918   Aug 2012
We all use path routing everyday as we take shortcuts to avoid traffic jams, or by using faster traffic means. Previous models of traffic flow of RNA polymerase II (RNAPII) during transcription, however, were restricted to one dimension along the ...
Takashi Tsuboi
Commentarii Mathematici Helvetici   87 141-185   Jan 2012
We show that the identity component DiffrM2m0 of the group of Crdiffeomorphisms of a compact .2m/-dimensional manifold M2m(1≤ r ≤ 1, r ≠ 2m C 1) is uniformly perfect for 2m ≥ 6, i.e., any element of Diffr.M2m/0 can be written as a product of a bou...
Takashi Tsuboi
Annales Scientifiques de l'Ecole Normale Superieure   42 601-651   Jan 2009
The group of real analytic diffeomorphisms of a real analytic manifold is a rich group. It is dense in the group of smooth diffeomorphisms. Herman showed that for the n-dimensional torus, its identity component is a simple group. For U(1) fibered ...
Classifying spaces for groupoid structures
Tsuboi Takashi
Tomoo Yokoyama, Takashi Tsuboi
Annales de l'Institut Fourier   58 723-731   Jan 2008
Let ℱ be a transversely orientable transversely real-analytic codimension one minimal foliation of a paracompact manifold M. We show that if the fundamental group of each leaf of ℱ is isomorphic to Z, then ℱ is without holonomy. We also show that ...
Tsuboi Takashi
Consider the group SL(2; Z) acting on the circle consisting of rays from the origin in R2. The action of parabolic elements or transvections XSL(2; Z) (Tr X=2) have 2 fixed points on the...
Takashi Tsuboi
Journal of the Mathematical Society of Japan   56 1233-1253   Jan 2004
This paper concerns projectively Anosov flows ϕtwith smooth stable and unstable foliations Fs and Fu on a Seifert fibered 3-manifold M over a hyperbolic orbifold. We show that if the foliations Fs and Fu do not have compact leaves, then after chan...
Takashi Tsuboi
Transactions of the American Mathematical Society   352 515-524   Dec 2000
We show the following relationship between the Euler class for the group of the orientation preserving diffeomorphisms of the circle and the Calabi invariant for the group of area preserving diffeomorphisms of the disk which are the identity along...
Takashi Tsuboi
Hokkaido Mathematical Journal   27 605-623   Jan 1998
The Godbillon-Vey class is a characteristic cohomology class of dimension 3 for foliations of codimension 1 whose transition functions are transversely Lipschitz and with derivatives of bounded variations. We show that for a foliation F of S3× S3o...
Vlad Sergiescu, Takashi Tsuboi
American Journal of Mathematics   118 1299-1312   Dec 1996
Let μkbe the k-dimensional Menger compact space. We show that the group Homeo (μk) of homeomorphisms of μkis acyclic.
TSUBOI Takashi
Tokyo Sugaku Kaisya Zasshi   47(1) 1-30   Jan 1995
Takashi Tsuboi
Topology   34 815-857   Jan 1995
SATO Atsushi, TSUBOI Takashi
Memoirs of the Institute of Sciences and Technology, Meiji University   33 41-46   1994
Consider the total space of a circle bundle over a closed orientable surface. In this paper we obtain a necessary and sufficient condition for this manifold to admit a contact structure transverse to the fibers of the circle bundle in terms of the...
Yoshinobu Kamishima, Takashi Tsuboi
Inventiones Mathematicae   104 149-163   Dec 1991
Tsuboi Takashi
Journal of The Faculty of Science, The University of Tokyo, Section IA, Mathematics   37(2) 255-262   1990
Tsuboi Takashi
Journal of The Faculty of Science, The University of Tokyo, Section IA, Mathematics   36(3) 717-727   1989
Tsuboi Takashi
Journal of The Faculty of Science, The University of Tokyo, Section IA, Mathematics   34(2) 271-274   1987
Tadayoshi Mizutani, Tadayoshi Mizutani, Tadayoshi Mizutani, Tadayoshi Mizutani, Shigeyuki Morita, Shigeyuki Morita, Shigeyuki Morita, Shigeyuki Morita, Takashi Tsuboi, Takashi Tsuboi, Takashi Tsuboi, Takashi Tsuboi
Topology   22 325-343   Jan 1983
Shigeyuki Morita, Takashi Tsuboi
Topology   19 43-49   Jan 1980
Takashi Tsuboi
Topology   18 223-233   Jan 1979

Books etc

足助 太郎, 松元 重則, 三松 佳彦, Hurder Steven, 坪井 俊
Mathematical Society of Japan   2017   ISBN:9784864970402
Foliations 2012, Walczack Paweł, Alvarez López Jesús A., Hurder Steven, Langevin Remi, 坪井 俊
World Scientific   2013   ISBN:9789814556859
坪井 俊
東京大学出版会   May 2008   ISBN:4130629565
坪井 俊, 足助 太郎, 大鹿 健一, 金井 雅彦, 河澄 響矢, 中山 裕道, 林 脩平, 藤原 耕二, 松本 重則, 皆川 弘之, 森田 茂之, 森吉 仁志
坪井俊   2008   
Penner Robert, Kotschick Dieter, 坪井 俊, 河澄 響矢, 北野 晃朗, 三松 佳彦, 森田 茂之
Mathematical Society of Japan   2008   ISBN:9784931469488
Walczak Paweł Grzegorz, Langevin Remi, Hurder Steven, 坪井 俊
World Scientific   2006   ISBN:9812700749
坪井 俊
東京大学出版会   Apr 2005   ISBN:4130629549
坪井 俊
朝倉書店   May 2002   ISBN:4254115857