منابع مشابه
On Witt Vector Cohomology for Singular Varieties
Over a perfect field k of characteristic p > 0, we construct a “Witt vector cohomology with compact supports” for separated k-schemes of finite type, extending (after tensorisation with Q) the classical theory for proper k-schemes. We define a canonical morphism from rigid cohomology with compact supports to Witt vector cohomology with compact supports, and we prove that it provides an identifi...
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We compute the total Witt groups of (split) Grassmann varieties, over any regular base X. The answer is a free module over the total Witt ring of X. We provide an explicit basis for this free module, which is indexed by a special class of Young diagrams, that we call even Young diagrams.
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Given a totally real field L of degree g, we construct g Hasse invariants on Hilbert modular varieties in characteristic p and characterize their divisors. We show that these divisors give the type stratification defined by the action of {~L o n the ap-elementary subgroup. Under certain conditions, involving special values of zeta functions, the product of these Hasse invariants is the reductio...
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ژورنال
عنوان ژورنال: Hiroshima Mathematical Journal
سال: 1988
ISSN: 0018-2079
DOI: 10.32917/hmj/1206129863