Thursday, 12 April 2007

at.algebraic topology - Maurer-Cartan and representable functors on differential graded commutative algebras

Let mathfrakg be a differential graded Lie algebra on a charcteristic zero field, whose underlying chain complex is bounded below and degreewise finite dimensional. Then mathfrakg defines a Set-valued functor on differential graded commutative algebras (also, with some finiteness and boundedness assumption) mapping each cgda Omega to the set MC(Omegaotimesmathfrakg) of Maurer-Cartan elements of the dgla Omegaotimesmathfrakg (with the natural dgla structure on the tensor product of a dgla with a cdga). It is well known that this functor is representable: MC(Omegaotimesmathfrakg)congHomdgca(CE(mathfrakg),Omega), where the Chevalley-Eilenberg dgca CE(mathfrakg) is the free graded commutative algebra on the shifted linear dual of mathfrakg endowed with the differential induced by the dgla structure on mathfrakg.



If one looks at the category of commutative graded algebras instead (i.e., one forgets the differential), then CE(mathfrakg) represents the functor Omegamapsto(Omegaotimesmathfrakg)1.



My question is: is this latter functor representable also in the category of differential graded commutative algebras? if yes, by which dgca?

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