Integral $p$-adic cohomology theories
In this paper, we show the non-existence of finitely generated integral $p$-adic cohomology which satisfies finite \'etale descent and the associated rational cohomology coincides with rigid cohomology.
math.NT↗
arXiv subjects
Richard Crew
Publications and source records attributed to Richard Crew.
Weil groups and $F$-isocrystals
We show that much of local class theory can be deduced from the Dieudonn\'e-Manin structure theory for $F$-isocrystals on an algebraically closed field of characteristic $p>0$. As a consequence we get a new proof of a formula of Dwork for the norm residue symbol, as well as a "constructive" proof of the local Shafarevich-Weil theorem. This last answers a question of Morava.
math.NT↗
Arithmetic D-modules on locally noetherian formal schemes
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 of convergent isocrystals on a separated scheme of finite type over a field, and show that the pullback by Frobenius is an auto-equivalence. This extends results of Berthelot that were proven in the smooth case.
math.AG↗