Resumen de The multiplicative structure on Hochschild cohomology of a complete intersection

Ragnar-Olaf Buchweitz, Collin Roberts

• We determine the product structure on Hochschild cohomology of commutative algebras in low degrees, obtaining the answer in all degrees for complete intersection algebras. As applications, we consider cyclic extension algebras as well as Hochschild and ordinary cohomology of finite abelian groups.