Abstract
For every smooth and separated Deligne–Mumford stack F, we associate a motive M(F) in Voevodsky’s category of mixed motives with rational coefficients DMeff(k,Q). When F is proper over a field of characteristic 0, we compare M(F) with the Chow motive associated to F by Toen (2000) ([31]). Without the properness condition we show that M(F) is a direct summand of the motive of a smooth quasi-projective variety.
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