65 citations · 420 across the 91 of their papers we have counts for
5 papers · 1 filter
Stratified bundles and étale fundamental group
Hélène Esnault, Xiaotao Sun
v2: A few typos corrected, a few formulations improved. On projective smooth over an algebraically closed field of characteristic , we show that irreducible stratified bun…
Finite group actions, rational fixed points and weak Néron models
Hélène Esnault, Johannes Nicaise
If is a finite -group acting on an affine space over a finite field of cardinality prime to , Serre has shown that there exists a rational fixed…
Rational points over finite fields for regular models of algebraic varieties of Hodge type
Pierre Berthelot, Hélène Esnault, Kay Rülling
Let be a discrete valuation ring of mixed characteristics , with finite residue field and fraction field , let be a finite extension of , and let be a…
On the algebraic fundamental group of smooth varieties in characteristic
Hélène Esnault, Amit Hogadi
We define an analog in characteristic of the proalgebraic completion of the topological fundamental group of a complex manifold.
Surface singularities dominated by smooth varieties
Hélène Esnault, Eckart Viehweg
We give a version in characteristic of Mumford's theorem characterizing a smooth complex germ of surface by the triviality of the topological fundamental group of $U=…