It was long believed that Massey products in the cohomology of a differential graded associative algebra were determined by the higher operations on a minimal A-infinity model. This was disproved by Buijs, Moreno-Fernández, and Murillo. They also gave sufficient conditions for it to hold. In this talk, we will present two further conditions:
- Associative algebras with sparse cohomology.
- Algebras over Koszul operads.
In the latter case, we define an analogue of triple Massey products which extends the cases previously considered in the literature (associative and Lie algebras).
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