activity
20002026
most citedThe characteristic class and ramification of an l-adic etale sheaf

33 citations · 55 across the 6 of their papers we have counts for

collaborators

6 papers

math.AG2026

Twisting Higgs Modules and Functorial Aspects of the p-adic Simpson Correspondence

Ahmed Abbes, Michel Gros, Takeshi Tsuji

The classical Simpson correspondence describes complex linear representations of the fundamental group of a smooth complex projective variety in terms of linear algebra objects, na…

math.AG2024

Holonomic étale sheaves are constructible

Ahmed Abbes, Takeshi Saito

Building on Beilinson's work, ``constructible sheaves are holonomic,'' we introduce the notion of holonomicity for étale sheaves, without assuming a priori constructibility. Over a…

math.AG2010★ 1 cited

Ramification and cleanliness

Ahmed Abbes, Takeshi Saito

This article is devoted to studying the ramification of Galois torsors and of -adic sheaves in characteristic (with ). Let be a perfect field of charact…

math.AG2008★ 21 cited

Local Fourier transform and epsilon factors

Ahmed Abbes, Takeshi Saito

Laumon introduced the local Fourier transform for -adic Galois representations of local fields, of equal characteristic different from , as a powerful tool to study…

math.AG2006★ 33 cited

The characteristic class and ramification of an l-adic etale sheaf

Ahmed Abbes, Takeshi Saito

We introduce the characteristic class of an l-adic etale sheaf using a cohomological pairing due to Verdier (SGA5). As a consequence of the Lefschetz-Verdier trace formula, its tra…

math.AG2000

Ramification of local fields with imperfect residue fields

Ahmed Abbes, Takeshi Saito

Classically the ramification filtration of the Galois group of a complete discrete valuation field is defined in the case where the residue field is perfect. In this paper, we defi…