De Rham-Witt complexes with coefficients and rigid cohomology 【2012.11.14 5:00pm,C610】 |
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2012-11-09
Colloquia & Seminars
Speaker
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Pierre Berthelot (Université de Rennes 1)
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Title
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De Rham-Witt complexes with coefficients and rigid cohomology
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Time
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2012.11.14 5:00pm
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Venue
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C610
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Abstract
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For a smooth scheme over a perfect field of characteristic p, we will explain a generalization of the classical comparison theorem between crystalline cohomology and de Rham-Witt cohomology to the case of cohomologies with coefficients in a p-torsion free crystal. This provides in particular a description of the rigid cohomology of a proper singular scheme in terms of a de Rham-Witt complex built from a closed immersion into a smooth scheme.
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Affiliation
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