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15
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Milne's proof of weak lefschetz

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#algebraic-geometry #etale-cohomology
584
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Why can't we compute the singular cohomology of schemes/varieties with the Zariski topology?

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#algebraic-geometry #etale-cohomology
213
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Computation using projection formula for $\ell$-adic cohomology

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#algebraic-geometry #sheaf-cohomology #etale-cohomology
192
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Proposition 3.2.7 of Etale cohomology theory by Lei Fu

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#algebraic-geometry #etale-cohomology
246
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What does henselization do in etale cohomology theory?

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#algebraic-geometry #etale-cohomology
101
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Equivalent characterizations of Henselian Rings (Theorem 4.2 in James Milne's "Étale Cohomology")

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#algebraic-geometry #etale-cohomology #hensels-lemma
340
Views

Why does having an integral model make étale cohomology unramified?

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#algebraic-geometry #etale-cohomology #galois-representations
141
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Why do we require flatness in the definition of an étale morphism

Published on
#number-theory #algebraic-geometry #etale-cohomology
322
Views

Definition of an etale Algebra

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#abstract-algebra #galois-theory #etale-cohomology
424
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Étale topology corresponds to complex topology?

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#algebraic-geometry #etale-cohomology
169
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Question about a proof that all étale morphisms are locally standard étale

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#algebraic-geometry #schemes #affine-schemes #etale-cohomology
130
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Sheafification for the étale site

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#algebraic-geometry #sheaf-theory #etale-cohomology
77
Views

$\ell$-adic cohomology of varieties through a surjective proper map $X\to Y$

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#algebraic-geometry #homology-cohomology #etale-cohomology
120
Views

Monodromy representation of etale $\pi_1$ of projective line minus 3 points

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#algebraic-geometry #sheaf-theory #etale-cohomology
79
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Etale Fundamental Groups of Spec k

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#algebraic-geometry #fundamental-groups #etale-cohomology

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