Overconvergent global analytic geometry
arXiv:1410.7971
Abstract
We define a notion of global analytic space with overconvergent structure sheaf. This gives an analog on a general base Banach ring of Grosse-Kloenne's overconvergent p-adic spaces and of Bambozzi's generalized affinoid varieties over R. This also gives an affinoid version of Berkovich's and Poineau's global analytic spaces. This affinoid approach allows the introduction of a notion of strict global analytic space, that has some relations with the ideas of Arakelov geometry, since the base extension along the identity morphism on Z (from the archimedean norm to the trivial norm) sends a strict global analytic space to a usual scheme over Z, that we interpret here as a strict analytic space over Z equipped with its trivial norm. One may also interpret some particular analytification functors as mere base extensions. We use our categories to define overconvergent motives and an overconvergent stable homotopy theory of global analytic spaces. These have natural Betti, de Rham and pro-étale realizations. Motivated by problems in global Hodge theory and integrality questions in the theory of special values of arithmetic L-functions, we also define derived overconvergent global analytic spaces and their (derived) de Rham cohomology. Finally, we use Toen and Vezzosi's derived geometric methods to define a natural (integral) Chern character on analytic Waldhausen's K-theory with values in analytic cyclic homology. The compatibility of our constructions with Banach base extensions gives new perspectives both on global analytic spaces and on the various realizations of the corresponding motives.
arXiv comment82 pages, modified notion of strict analytic space, minor other modifications
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