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Cohomologie étale des espaces d'arcs
Bouthier, Alexis...

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Cohomologie étale des espaces d'arcs by Bouthier, Alexis ( Author )
Lemonjar Open Access
N.A
07-09-2015
We establish a structure theorem on the arc space of a $k$-scheme of finite type. More precisely, we show that the arc space is locally for the pro-smooth toplogy a product of an infinite dimensional affine space and of a non-noetherian scheme, stratified by $k$-schemes of finite type, that glues the different formal completions of the arc space. This statement globalizes Drinfeld-Grinberg-Kazhdan's theorem and proves a conjecture of Kollar and Nemethi. Then, we use this theorem to construct a derived category of constructible sheaves, stable by six operations and we show a finiteness result for the cohomology.
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http://arxiv.org/abs/1509.02203
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