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math.KT2004★ 3 cited
Obstruction theory for objects in abelian and derived categories
Wendy T. Lowen
In this paper we develop the obstruction theory for lifting complexes, up to quasi-isomorphism, to derived categories of flat nilpotent deformations of abelian categories. As a par…
math.KT2004★ 2 cited
Hochschild cohomology of abelian categories and ringed spaces
W. T. Lowen, M. Van den Bergh
This paper continues the development of the deformation theory of abelian categories introduced in a previous paper by the authors. We show first that the deformation theory of abe…