activity
20112024
most citedTheory of weights in p-adic cohomology

18 citations · 62 across the 17 of their papers we have counts for

collaborators

17 papers

math.NT2024

On the Serre conjecture for Artin characters in the geometric case

Tomoyuki Abe

Let be a finite group and be a regular local ring on which acts. Under certain assumptions on and the action, Serre defined a function $a_G\colon G\rightarrow\mathb…

math.AG2022

A comparison between compactly supported rigid and -module cohomology

Tomoyuki Abe, Christopher Lazda

The goal of this article is to prove a comparison theorem between rigid cohomology and cohomology computed using the theory of arithmetic -modules. To do this, we cons…

math.AG2022

Ramification theory from homotopical point of view, II

Tomoyuki Abe

This is the second part of the paper which proves the compatibility of pushforward along a proper morphism of an étale constructible sheaf and the pushforward of its characteristic…

math.AG2022★ 1 cited

Ramification theory from homotopical point of view, I

Tomoyuki Abe

We prove the compatibility of pushforward along a proper morphism of an étale constructible sheaf and the pushforward of its characteristic cycle up to -torsion. This was conjec…

math.NT2021

Integral -adic cohomology theories

Tomoyuki Abe, Richard Crew

In this paper, we show the non-existence of finitely generated integral -adic cohomology which satisfies finite étale descent and the associated rational cohomology coincides wi…

math.AG2021

Trace formalism for motivic cohomology

Tomoyuki Abe

The goal of this paper is to construct trace maps for the six functor formalism of motivic cohomology after Voevodsky, Ayoub, and Cisinski-Déglise. We also construct an -en…

math.AG2020

Proper pushforwards on analytic adic spaces

Tomoyuki Abe, Christopher Lazda

We construct proper pushforwards for partially proper morphisms of analytic adic spaces. This generalises the theory due to van der Put in the case of rigid analytic varieties over…

math.CT2020

Enhanced bivariant homology theory attached to six functor formalism

Tomoyuki Abe

Bivariant theory is a unified framework for cohomology and Borel-Moore homology theories. In this paper, we extract an -enhanced bivariant homology theory from Gaitsgory-Ro…

math.AG2018

Around the nearby cycle functor for arithmetic -modules

Tomoyuki Abe

We will establish a nearby and vanishing cycle formalism for the arithmetic -module theory following Beilinson's philosophy. As an application, we define smooth object…

math.AG2016★ 7 cited

A Lefschetz theorem for overconvergent isocrystals with Frobenius structure

Tomoyuki Abe, Hélène Esnault

We show a Lefschetz theorem for irreducible overconvergent -isocrystals on smooth varieties defined over a finite field. We derive several consequences from it.

math.AG2013★ 17 cited

Langlands correspondence for isocrystals and the existence of crystalline companions for curves

Tomoyuki Abe

In this paper, we show the Langlands correspondence for isocrystals on curves. This shows the existence of crystalline companion in the curve case. For the proof, we construct the…

math.AG2013★ 3 cited

On Beilinson's equivalence for -adic cohomology

Tomoyuki Abe, Daniel Caro

In this short note, we show a p-adic analogue of Beilinson's equivalence comparing two derived categories: the derived category of holonomic modules and derived category of modules…

math.AG2013★ 18 cited

Theory of weights in p-adic cohomology

Tomoyuki Abe, Daniel Caro

Let k be a finite field of characteristic p>0. We construct a theory of weights for overholonomic complexes of arithmetic D-modules with Frobenius structure on varieties over k. Th…

math.AG2011★ 3 cited

Langlands program for -adic coefficients and the petites camarades conjecture

Tomoyuki Abe

In this paper, we prove that, if Deligne's "petites camarades conjecture" holds, then a Langlands type correspondence holds also for -adic coefficients on a smooth curve over a…

math.AG2011★ 3 cited

Explicit calculation of Frobenius isomorphisms and Poincaré duality in the theory of arithmetic -modules

Tomoyuki Abe

The aim of this paper is to compute the Frobenius structures of some cohomological operators of arithmetic $\ms{D}$-modules. To do this, we calculate explicitly an isomorphism betw…

math.AG2011

Rings of microdifferential operators for arithmetic -modules

Tomoyuki Abe

The aim of this paper is to develop a theory of microdifferential operators for arithmetic -modules. We first define the sheaves of microdifferential operators of arbi…

math.AG2011★ 10 cited

Product formula for p-adic epsilon factors

Tomoyuki Abe, Adriano Marmora

Let X be a smooth proper curve over a finite field of characteristic p. We prove a product formula for p-adic epsilon factors of arithmetic D-modules on X. In particular we deduce…