A Simple Construction of Derived Representation Schemes

Details A Simple Construction of Derived Representation Schemes A Simple Construction of Derived Representation Schemes

2010-10-23

arxiv.org/abs/1010.4901v1

Mathematics

K-Theory and Homology

8 pages

Scientific paper

We present a simple algebraic construction of the (non-abelian) derived functors DRep_n(A) of the representation scheme Rep_n(A), parametrizing the n-dimensional representations of an associative algebra A. We construct a related derived version of the representation functor introduced recently by M. Van den Bergh and, as an application, compute the derived tangent spaces TDRep_n(A) to Rep_n(A). We prove that our construction of DRep_n(A) agrees with an earlier construction of derived action spaces, due to I. Ciocan-Fontanine and M. Kapranov; however, our approach, proofs and motivation are quite different. This paper is mainly a research announcement; detailed proofs and applications will appear elsewhere.

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