Geometry Colloquium

Seminar information archive ~02/27Next seminarFuture seminars 02/28~

Date, time & place Friday 10:00 - 11:30 126Room #126 (Graduate School of Math. Sci. Bldg.)


10:00-11:30   Room #122 (Graduate School of Math. Sci. Bldg.)
Masayuki ASAOKA (Kyoto University)
A rigidity lemma for cocycles over BS(1,k)-actions (JAPANESE)
[ Abstract ]
Existence of an invariant geometric structure is persistent for many known examples of group actions on homogeneous spaces. In this talk, I would like to report an attempt to explain such a rigidity from a unified point of view. We will see that some rigidity results are reduced to a rigidity lemma on Diff(R^n,0)-valued cocycles over BS(1,k)-actions, where BS(1,k) is the Baumslag-Solitar group .