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University of Cambridge > Talks.cam > Junior Geometry Seminar > A theorem of Kontsevich on graph complexes and some applications in topology

## A theorem of Kontsevich on graph complexes and some applications in topologyAdd to your list(s) Download to your calendar using vCal - Nils Prigge (DPMMS)
- Friday 05 May 2017, 15:00-16:00
- MR13.
If you have a question about this talk, please contact cbz20. There are several interesting results in somewhat different aspects of algebraic topology that involve chain complexes that are defined via graphs and certain graph operations. For example, Watanabe produced non-trivial elements in the rational homotopy groups of Diff(Dₙ) beyond the known stable range, and Berglund and Madsen showed that they appear in the stable cohomology of certain moduli spaces. A good interpretation of the emergence of these graph complexes is via (cyclic) operads. I want to discuss this definition and some of the results by Kontsevich on their homology that relate them to some problems in topology. This talk is part of the Junior Geometry Seminar series. ## This talk is included in these lists:Note that ex-directory lists are not shown. |
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