New posts in Etale Cohomology

Kummer sequence etale topology

What is the difference between $\ell$-adic cohomology and cohomology with coefficient in $Z_\ell$?

Cohomology of resolution of singularity

A very elementary question on the definition of sheaf on a site

Is there a version of algebraic de Rham cohomology that can be used to calculate torsion classes?

Étale cohomology of morphism whose fibers are vector spaces

Vanishing of higher direct image of finite morphisms relative to the fppf topology

When is the etale cohomology of $\mathrm{Sym}^n(X)$ isomorphic to the $\Sigma_n$-invariants in the étale cohomology of $X^n$?

Finiteness of Galois cohomology

A short proof for simple connectedness of the projective line