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A Spectral Sequence for the Hochschild Cohomology of a Coconnective DGA

Shoham Shamir

Abstract


A spectral sequence for the computation of the Hochschild cohomology of a coconnective dga over a field is presented. This spectral sequence has a similar flavour to the spectral sequence presented in [7] for the computation of the loop homology of a closed orientable manifold. Using this spectral sequence we identify a class of spaces for which the Hochschild cohomology of their mod-$p$ cochain algebra is Noetherian. This implies, among other things, that for such a space the derived category of mod-$p$ chains on its loop-space carries a theory of support varieties.

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DOI: http://dx.doi.org/10.7146/math.scand.a-15240

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ISSN 0025-5521 (print) ISSN 1903-1807 (online)

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