Volume 19, issue 3 (2019)

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Representing the deformation $\infty$–groupoid

Daniel Robert-Nicoud

Algebraic & Geometric Topology 19 (2019) 1453–1476

Our goal is to introduce a smaller, but equivalent version of the deformation –groupoid associated to a homotopy Lie algebra. In the case of differential graded Lie algebras, we represent it by a universal cosimplicial object.

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deformation theory, Deligne groupoid, differential graded Lie algebras, Maurer–Cartan elements
Mathematical Subject Classification 2010
Primary: 17B55
Secondary: 18G55, 55U10
Received: 30 March 2018
Revised: 6 September 2018
Accepted: 25 September 2018
Published: 21 May 2019
Daniel Robert-Nicoud
Laboratoire Analyse, Géométrie et Applications
Université Paris 13