1 citations · 2 across the 4 of their papers we have counts for
4 papers
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…
Weil groups and -isocrystals
Richard Crew
We show that much of local class theory can be deduced from the Dieudonné-Manin structure theory for -isocrystals on an algebraically closed field of characteristic . As a…
Arithmetic D-modules on locally noetherian formal schemes
Richard Crew
We extend Berthelot's theory of arithmetic D-modules to a class of morphisms that are not necessarily of finite type. As an application we give a new construction of the category o…
Rigidity and Frobenius Structure
Richard M. Crew
We show that an irreducible ordinary differential equation on the projective line has a Frobenius structure for a power of some prime p if it is rigid in the sense of Katz and sati…