Operations on the Hochschild Bicomplex of a Diagram of Algebras

Research output: Working paper


A diagram of algebras is a functor valued in a category of associative algebras. I construct an operad acting on the Hochschild bicomplex of a diagram of algebras. Using this operad, I give a direct proof that the Hochschild cohomology of a diagram of algebras is a Gerstenhaber algebra. I also show that the total complex is an $L_\infty$-algebra. The same results are true for the asimplicial subcomplex and its cohomology. This structure governs deformations of diagrams of algebras through the Maurer-Cartan equation.
Original languageEnglish
Publication statusUnpublished - 3 Feb 2020

Bibliographical note

60 pages


  • math.CT
  • math.AT
  • math.RA
  • 18D50 (primary) 16E40 (Secondary)

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