Differential graded algebras with divided powers and homotopy Lie algebras
Representation Theory
2026-02-10 v3 Commutative Algebra
Abstract
Given a commutative algebra and a quotient -algebra , we construct a resolution of as an -module such that it is also a differential graded (dg) algebra with divided powers (PD). This construction makes use of symmetric tensors in the symmetric tensor category of dg -modules and does not require a Noetherian assumption on . Moreover, the resolution has many lifting properties which we leverage to study the homotopy Lie algebra associated to the pair , which is defined as the cohomology of the PD derivations of this PD dg algebra. Finally we investigate the complete intersection case in more details as well as connect it to the finite generation of the Yoneda algebra.
Keywords
Cite
@article{arxiv.2511.22614,
title = {Differential graded algebras with divided powers and homotopy Lie algebras},
author = {Antoine Caradot and Zongzhu Lin},
journal= {arXiv preprint arXiv:2511.22614},
year = {2026}
}
Comments
46 pages. Fixed typos in Proposition 4.7 and its proof