Multilinear Morphisms between 1-motives
نویسنده
چکیده
We introduce the notion of biextensions of 1-motives by 1-motives and we define morphisms from the tensor product of two 1-motives to a third 1-motive as isomorphism classes of such biextensions. If S is the spectrum of a field of characteristic 0, we check that these biextensions define morphisms from the tensor product of the realizations of two 1-motives to the realization of a third 1-motive. Generalizing we obtain the notion of multilinear morphisms between 1-motives.
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