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arXiv · 2405.14798

Koszul duality and the Poincar\'e-Birkhoff-Witt theorem

Ezra Getzler
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Abstract

Using a homotopy introduced by de Wilde and Lecomte and homological perturbation theory for $A_\infty$-algebras, we give an explicit proof that the universal enveloping algebra $UL$ of a differential graded Lie algebra $L$ is Koszul, via an explicit contracting homotopy from the cobar construction $\Omega CL$ of the Chevalley-Eilenberg chain coalgebra $CL$ of $L$ to $UL$.

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Ezra Getzler. 2024-05-23. Koszul duality and the Poincar\'e-Birkhoff-Witt theorem. https://arxiv.org/abs/2405.14798

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