SYNTOMIC REGULATORS AND p-ADIC INTEGRATION I: RIGID SYNTOMIC REGULATORS
نویسنده
چکیده
The syntomic cohomology, more precisely the cohomology of the sheaves s(n) on the syntomic site of a scheme, where introduced in [FM87] in order to prove comparison isomorphisms between crystalline and p-adic étale cohomology. It can be seen as an analogue of the Deligne-Beilinson cohomology in the p-adic world (for an excellent discussion see [Nek98]). In particular, when X is a smooth scheme over the ring of integers V of a finite extension K of Qp there should exist higher Chern classes from algebraic K-theory into the syntomic cohomology of X . Such classes have been constructed, sometimes under certain additional assumptions, by Gros [Gro90] and by Nizio l [Niz97]. Syntomic cohomology comes in different flavors (much like Deligne-Beilinson cohomology). The versions discussed above are well behaved only for proper schemes. In particular, they do not have the homotopy property for affine spaces. This makes computations difficult because most constructions in K-theory go through non proper schemes. In [Gro94], Gros introduced, using the rigid cohomology of Berthelot [Ber96, Ber97], rigid syntomic cohomology for a scheme X which is smooth over an unramified base. When the scheme X is affine he constructs rigid syntomic regulators,
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تاریخ انتشار 1998