On higher order analogues of de Rham cohomology
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If K is a commutative ring and A is a K-algebra, for any sequence $σ$ of positive integers there exists an higher order analogue dR($σ$) of the standard de Rham complex dR(1,...,1,...), which can also be defined starting from suitable ("differentially closed") subcategories of (A-mod). The main result of this paper is that the cohomology of dR($σ$) does not depend on $σ$, under some smoothness assumptions on the ambient category. Before proving the main theorem we give a rather detailed exposition of all relevant (to our present purposes) functors of differential calculus on commutative algebras. This part can be also of an independent interest.
Slightly revised version of Math. Preprint 19, Scuola Normale Superiore, Pisa (June 1998)
Slightly revised version of Math. Preprint 19, Scuola Normale Superiore, Pisa (June 1998)