Cup product on -cohomology and deformations

  • Alexey A. Sharapov

    Tomsk State University, Russia
  • Evgeny D. Skvortsov

    Albert Einstein Institute, Potsdam, Germany
Cup product on $A_\infty$-cohomology and deformations cover
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We propose a simple method for constructing formal deformations of differential graded algebras in the category of minimal -algebras. The basis for our approach is provided by the Gerstenhaber algebra structure on -cohomology, which we define in terms of the brace operations. As an example, we construct a minimal -algebra from the Weyl–Moyal -product algebra of polynomial functions.

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Alexey A. Sharapov, Evgeny D. Skvortsov, Cup product on -cohomology and deformations. J. Noncommut. Geom. 15 (2021), no. 1, pp. 223–240

DOI 10.4171/JNCG/411