Generalized Weil’s Reciprocity Law and Multiplicativity Theorems
نویسنده
چکیده
Fix a one-dimensional group variety G with Euler–characteristic χ(G) = 0, and a quasi–projective variety Y , both defined over C. For any f ∈ Hom(Y, G) and constructible sheaf F on Y , we construct an invariant cF (f) ∈ G, which provides substantial information about the topology of the fiber–structure of f and the structure of F along the fibers of f . Moreover, cF : Hom(Y,G)→ G is a group homomorphism.
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تاریخ انتشار 1997