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Symmetries of modular genus zero operad
Lundi, 4 Novembre, 2019 - 14:00
Résumé :
The profinite completion of the Grothendieck--Teichmüller group $\hat {GT}$ acts upon the operad of moduli spaces of stable curves of genus zero with marked points, whose n--ary component is $\bar{M}_{0,n+1}$ for $n \geq 3$. Here, we study various aspects of this action. We investigate the (stacky) operad, defined by a fundamental involution in $\hat{GT}$ and combinatorial aspects of the total action.
Institution de l'orateur :
MPIM
Thème de recherche :
Algèbre et géométries
Salle :
4
