Geoffroy Horel

Maître de conférences à l'Université Paris 13.

E-mail:: h_o_r_e_l@math.univ-paris13.fr (ignore the underscores)

Adresse:: Institut Galilée, Université Paris 13, 99 avenue Jean-Baptiste Clément, 93430 Villetaneuse, France.

Membre des projets ANR ChroK , PerGAMo et HighAGT ainsi que du projet Moduli spaces of submanifolds and motion groups. Je suis également membre du GDR Topologie algébrique et applications. Ancien membre du projet ANR SAT.

Preprints

My preprints are also available on arXiv. The most up-to-date versions are on this website.

(with Martin Palmer) Motivic homological stability of configuration spaces, (last update 15 November 2020).
Automorphisms of the little disks operad with p-torsion coefficients, (last update, 7 August 2019).
(with Joana Cirici) Étale cohomology, purity and formality with torsion coefficients , (last update 8 June 2017).
(with Maxime Ramzi) A multiplicative comparison of MacLane homology and topological Hochschild homology, to appear in Annals of K-theory (last update 22 January 2021).
(with Pedro Boavida de Brito) On the formality of the little disks operads in positive characateristic, to appear in Journal of the London Mathematical Society, (last update 22 January 2021).
(with Gabriel Drummond-Cole) Homotopy transfer and formality, to appear in Annales de l'institut Fourier (last update, 15 November 2020).

Published papers

(with Pedro Boavida de Brito) Galois symmetries of knot spaces, Compositio Mathematica , Volume 157 , Issue 5 , May 2021 , pp. 997 - 1021 , Journal version
(with Joana Cirici) Mixed Hodge structures and formality of symmetric monoidal functors, Annales Scientifiques de l'École Normale Supérieure, Vol. 53-4 (2020), pp. 1071--1104, Journal version.
(with Pedro Boavida de Brito and Marcy Robertson) Operads of genus zero curves and the Grothendieck-Teichmüller group, Geometry & Topology, Vol. 23-1 (2019), pp. 299--346. Journal version.
(with Clément Dupont) On two chain models for the gravity operad, Proc. Amer. Math. Soc. 146 (2018), pp. 1895–1910. Journal version.
Profinite completion of operads and the Grothendieck-Teichmüller group, Advances in Math. Vol. 321, (2017), pp. 326–390. Journal version.
Factorization homology and calculus à la Kontsevich Soibelman, Journal of Noncommutative Geometry, Vol. 11, No. 2 (2017), pp. 703–740. Journal version.
(with Ilan Barnea and Yonatan Harpaz) Pro-categories in homotopy theory, Algebraic & Geometric Topology, Vol. 17 (2017), pp. 567–643. Journal version
(with Giovanni Caviglia) Rigidification of higher categorical structures, Algebraic & Geometric Topology, Vol. 16 (2016), pp. 3533–3562. Journal version.
Brown categories and bicategories, Homology, Homotopy and Applications, Vol. 18 (2016), No. 2, pp. 217–232. Journal version.
Motivic homological stability for configurations spaces of the line, Bull. London Math. Soc. 48 (2016) pp. 601–616. Journal version. (The main theorem of this paper is incorrect, here is an Erratum)
Higher Hochschild cohomology of the Lubin-Tate ring spectrum , Algebraic & Geometric Topology, Vol. 15 (2015), pp. 3215–3252. Journal version
A model structure on internal categories in simplicial sets, Theory and Applications of Categories, Vol. 30, No. 20, 2015, pp. 704-750. Journal version.

Miscellaneous writings

Groupe de Galois et espace des noeuds (last update, 14 December 2018) In French, published in Actes du congrès de la SMF 2018.
A note on p-completion of spectra (last update, 13 April 2016) This is now part of the paper Automorphisms of the little disks operad with p-torsion coefficients.
The homotopy theory of A-infinity categories (last update, 14 March 2015)