On the quasi-isomorphism type of a perfect chain algebra

Mahmoud Benkhalifa

Let $R$ be a (P.I.D) and let $T(V),\partial )$ be a free $R$-dga. The quasi-isomorphism type of $(T(V),\partial )$ is the set, denoted $\{(T(V),\partial )\}$, of all free dgas which a…