1
$\begingroup$

Are Yoneda products (also known as cup product) on Hochschild cohomology of two quasi-isomorphic DGAs equivalent?

$\endgroup$
  • $\begingroup$ Yes, cup products and more generally the Tamarki--Tsygan calculus of an algebra is derived invariant, and quasi isomorphic dga algebras are derived equivalent. The first is a recent result of Marco Armenta and Bernhard Keller. $\endgroup$ – Pedro Tamaroff Apr 13 at 10:57

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.