Vanishing of cohomology in infinitely ramified towers
classification
🧮 math.AG
keywords
cohomologyvanishingconstructiblecoverscyclesesnaultformfrobenius
read the original abstract
We give a new proof of vanishing result of Esnault for the cohomology of constructible sheaves in the tower of ``mock'' Frobenius covers of projective space. The key idea is to use (a global form of) the perversity of nearby cycles.
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