AKITA, Toshiyuki
 Research Field
 Geometry
 Position
 Professor
 Organization
 Department of Mathematics
 Research Interest
 Topology / Group cohomology
 Research Activities

I’m working on group cohomology, the subject arose from both topological and algebraic sources. My main subject is the cohomology of Coxeter groups and mapping class groups of closed oriented surfaces.
Papers:T. Akita and N. Kawazumi,
Integral RiemannRoch formulae for cyclic subgroups of mapping class groups,
Mathematical Proceedings of the Cambridge Philosophical Society 144
(2008), 411421.T. Akita,
A formula for the Euler characteristics of even dimensional
triangulated manifolds,
Proceedings of the American Mathematical Society 136 (2008), 25712573.T. Akita,
Periodicity for MumfordMoritaMiller classes of surface symmetries,
Publications of the Research Institute for Mathematical Sciences 47
(2011), 897909.  Keywords
 characteristic classes, Chow ring, classifying spaces, discrete groups
 WebPage
 http://www.math.sci.hokudai.ac.jp/~akita/