Results 81 to 90 of about 355,706 (139)

Crystalline cohomology of rigid analytic spaces

open access: yesBulletin de la Société mathématique de France
In this article, we introduce infinitesimal cohomology for rigid analytic spaces that are not necessarily smooth, with coefficients in a p-adic field or Fontaine's de Rham period ring.
openaire   +3 more sources

Explicit crystalline lattices in rigid cohomology

open access: yes, 2011
Motivated by applications in point counting algorithms using p-adic cohomology, we give an explicit description of integral lattices in rigid cohomology spaces that p-adically approximate logarithmic crystalline cohomology modules. These lattices are expressed in terms of the global sections of the twisted logarithmic de Rham complex. We prove the main
openaire   +2 more sources

A cohomological characterisation of Yu's Property A for metric spaces

open access: yes, 2012
We introduce the notion of an asymptotically invariant mean as a coarse averaging operator for a metric space and show that the existence of such an operator is equivalent to Yu’s property A.
Wright, Nick   +2 more
core   +1 more source

A construction of semi-infinite de Rham cohomology [PDF]

open access: yes
The purpose of this thesis is to describe a construction of semi-infinite de Rham cohomology for infinite dimensional manifolds equipped with the extra structure of a polarisation.
Stacey, Andrew Edgell
core  

Explicit crystalline lattices in rigid cohomology

open access: yes, 2012
Motivated by applications in point counting algorithms using p-adic cohomology, we give an explicit description of integral lattices in rigid cohomology spaces that p-adically approximate logarithmic crystalline cohomology modules.
Walker, GM
core  

On Cohomological Decomposability of Almost-Kähler Structures [PDF]

open access: yes, 2012
We study the J-invariant and J-anti-invariant cohomological subgroups of the de Rham cohomology of a compact manifold M endowed with an almost-K\"ahler structure (J, \omega, g).
Tomassini, Adriano   +2 more
core  

An integral comparison of crystalline and de Rham cohomology

open access: yes
33 pages. Comments welcome!
Abhinandan, Youcis, Alex
openaire   +2 more sources

The homotopy type of toric arrangements [PDF]

open access: yes
A toric arrangement is a finite set of hypersurfaces in a complex torus, every hypersurface being the kernel of a character. In the present paper we build a CW-complex S homotopy equivalent to the arrangement complement ℜ x, with a combinatorial ...
Luca Moci, Simona Settepanella
core  

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