Séminaires : Séminaire de Topologie

Equipe(s) : tga,
Responsables :Najib Idrissi et Emmanuel Wagner
Email des responsables : najib.idrissi-kaitouni@u-paris.fr, emmanuel.wagner@imj-prg.fr
Salle : 1013
Adresse :Sophie Germain
Description

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Orateur(s) Semyon Abramyan - ETH Zurich,
Titre Embedding calculus for parallelized manifolds
Date10/03/2026
Horaire10:45 à 11:45
Diffusion
Résume

We study a variant of the embedding functor $Emb(M, N)$ that incorporates homotopical data from the frame bundle of the target manifold $N$. Given a parallelized $m$-manifold $M$ and an $n$-manifold $N$ equipped with a section of its $m$-frame bundle, we define a modified embedding functor $\widetilde{Emb}(M, N)$ that interpolates between the standard embedding and a reference framing. Using the manifold calculus of functors, we identify the Taylor tower of $\widetilde{Emb}(M, N)$ with a mapping space of right modules over the Fulton–MacPherson operad. We prove a convergence theorem under a codimension condition, establishing a weak equivalence between $\widetilde{Emb}(M, N)$ and its Taylor approximation. Finally, under rationalization, we describe the derived mapping space in terms of a combinatorial hairy graph complex, enabling computational access to the rational homotopy type of the space of embeddings.

Salle1013
AdresseSophie Germain
© IMJ-PRG