Decomposition, local Purity and Perverse variation of MHS
Résumé
The notes were conceived in view of two papers:
i) A geometric proof by Deligne and Gabber (preprint)
ii) Hard technical computations by Kashiwara: A study of variation of
mixed Hodge structure.
It happens that the idea by Gabber to use vanishing cycles concentraded on
one point leads to a remarkable simplication of the proofs in the theory at
an early stage, which is the motivation of the notes.
Domaines
Mathématiques [math]
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