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University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > Tree-indexed series, theory and examples

## Tree-indexed series, theory and examplesAdd to your list(s) Download to your calendar using vCal - Chapoton, F (Universit Claude Bernard Lyon 1)
- Thursday 31 January 2013, 14:00-16:00
- Seminar Room 1, Newton Institute.
If you have a question about this talk, please contact Mustapha Amrani. Grothendieck-Teichmller Groups, Deformation and Operads To any operad, one can associate a pro-unipotent group much alike the group of formal power series in one variable. This provides a theoretical framework for the use of tree-indexed series in numerical analysis (under the name of Butcher series) by using the PreLie operad. Some examples of tree-indexed series will be presented, with relations to polytopes and Lie idempotents This talk is part of the Isaac Newton Institute Seminar Series series. ## This talk is included in these lists:- All CMS events
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