The weight-zero pp-adic invariant-cycles conjecture

Let XX be regular, let W0W_0 be the sum of generalized ϕ\phi-eigenspaces whose eigenvalues are roots of unity, and let sp\operatorname{sp} be the étale specialization map. Weight-zero invariant-cycles conjecture. The map

W0Hi(Xsˉ,Qp)spW0Hi(Xηˉ,Qp)IW_0H^i(X_{\bar s},\mathbb Q_p)\xrightarrow{\operatorname{sp}}W_0H^i(X_{\bar\eta},\mathbb Q_p)^I

is an isomorphism. The source records this as the portion of the preceding pp-adic invariant-cycles statement needed for its applications, namely the weight-zero (and smaller eigenvalue-one) part.

Sources & referencesView supporting material

Primary source

Matthias Flach and Baptiste Morin, “On the Weil-étale topos of regular arithmetic schemes”, arXiv:1010.3833 (2010).

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