We prove that the projectors arising from the decomposition theorem applied to a projective map of quasi-projective varieties are absolute Hodge, Andr ́e motivated, Tate and Ogus classes. As a by-product, we introduce, in characteristic zero, the notions of algebraic de Rham intersection cohomology groups of a quasi-projective variety and of intersection cohomology motive of a projective variety
The projectors of the decomposition theorem are motivated / Cataldo, Mark Andrea A. de; Migliorini, Luca. - In: MATHEMATICAL RESEARCH LETTERS. - ISSN 1073-2780. - STAMPA. - 22:4(2015), pp. 1061-1088. [10.4310/MRL.2015.v22.n4.a6]
The projectors of the decomposition theorem are motivated
MIGLIORINI, LUCA
2015
Abstract
We prove that the projectors arising from the decomposition theorem applied to a projective map of quasi-projective varieties are absolute Hodge, Andr ́e motivated, Tate and Ogus classes. As a by-product, we introduce, in characteristic zero, the notions of algebraic de Rham intersection cohomology groups of a quasi-projective variety and of intersection cohomology motive of a projective varietyFile in questo prodotto:
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