Geodesic
Homotopy theory of unital algebras
Le Grignou, Brice1
1 Mathematical Institute, Utrecht University, Utrecht, Netherlands
Algebraic and Geometric Topology, Tome 19 (2019) no. 3, pp. 1541-1618

Voir la notice de l'article provenant de la source Mathematical Sciences Publishers

We provide an extensive study of the homotopy theory of types of algebras with units, for instance unital associative algebras or unital commutative algebras. To this purpose, we endow the Koszul dual category of curved coalgebras, where the notion of quasi-isomorphism barely makes sense, with a model category structure Quillen equivalent to that of unital algebras. To prove such a result, we use recent methods based on presentable categories. This allows us to describe the homotopy properties of unital algebras in a simpler and richer way. Moreover, we endow the various model categories with several enrichments which induce suitable models for the mapping spaces and describe the formal deformations of morphisms of algebras.

DOI : 10.2140/agt.2019.19.1541
Classification : 18D50, 18G30, 18G55, 55U15, 55U40
Keywords: operads, Koszul duality, bar and cobar constructions

Le Grignou, Brice 1

1 Mathematical Institute, Utrecht University, Utrecht, Netherlands 
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Le Grignou, Brice. Homotopy theory of unital algebras. Algebraic and Geometric Topology, Tome 19 (2019) no. 3, pp. 1541-1618. doi: 10.2140/agt.2019.19.1541

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