Results 61 to 70 of about 6,967,157 (160)

Associated primes of formal local cohomology modules

open access: yes, 2020
Let $\mathfrak{a}$ be an ideal of a commutative Noetherian ring $R$ and $M$ a finitely generated $R$-module. In this paper we proved that if $\operatorname{Supp}\mathfrak{F}_\mathfrak{a}^i(M)$ is finite for all ...
openaire   +2 more sources

Vanishing results for the cohomology of complex toric hyperplane complements [PDF]

open access: yes
Suppose R is the complement of an essential arrangement of toric hyperlanes in the complex torus and ? = ?1(R). We show that H*(R;A) vanishes except in the top degree n when A is one of the following systems of local coefficients: (a) a system of ...
Simona Settepanella, Mike W. Davis
core  

ABSTRACT LOCAL COHOMOLOGY FUNCTORS [PDF]

open access: yes, 2010
We propose to define the notion of abstract local cohomology functors. The ordinary local cohomology functor RΓI with support in the closed subset defined by an ideal I and the generalized local cohomology functor RΓI,J defined in [16] are characterized ...
Takeshi Yoshizawa   +3 more
core   +1 more source

On formal local cohomology, colocalization and endomorphism ring of top local cohomology models

open access: yes, 2011
Das Resultat von Hellus über vollständiger Durchschnitt motiviert zur Suche nach Resultaten über H_(I )^d(R) und die formalen lokalen Kohomologie Moduln F_(I )^(d-i)(R), I ein beliebiges Ideal eines lokalen Ringes (R,m), d≔dim⁡R. Wir ermittelten äquivalente Bedingungen für Artinsches Verhalten bzw. das Verschwinden der F_(I )^i(R).
openaire   +2 more sources

Amenable actions, invariant means and bounded cohomology

open access: yes, 2012
We show that topological amenability of an action of a countable discrete group on a compact spaceis equivalent to the existence of an invariant mean for the action.
Wright, Nick   +3 more
core   +1 more source

Chern character for totally disconnected groups [PDF]

open access: yes, 2009
In this paper we construct a bivariant Chern character for the equivariant $ KK $-theory of a totally disconnected group with values in bivariant equivariant cohomology in the sense of Baum and Schneider.
Voigt, C., Christian Voigt
core   +1 more source

Cohomology and the subgroup structure of a finite soluble group [PDF]

open access: yes
The main topic of this thesis is the discovery and study of a cohomological property of the subgroups called F-normalizers in finite soluble groups; namely, the property that with certain coefficient modules the restriction map in cohomology from a ...
Wilde, Thomas Stephen
core  

Deformation spaces of one-dimensional formal modules and their cohomology [PDF]

open access: yes, 2008
Let Mm be the formal scheme which represents the functor of deformations of a one-dimensional formal module over F¯p equipped with a level-m-structure. By work of Boyer (in equal characteristic) and Harris and Taylor, the ℓ-adic étale cohomology of the ...
Strauch, Matthias, Matthias Strauch
core   +1 more source

A finiteness result for associated primes of local cohomology modules [PDF]

open access: yes, 2000
We show that the first non-finitely generated local cohomology module Hi a (M ) of a finitely generated module M over a noetherian ring R with respect to an ideal a ⊆ R has only finitely many associated ...
Faghani, A   +3 more
core   +1 more source

The integer cohomology of toric Weyl 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 prove that if T(W) is the toric arrangement defined by the cocharacters lattice of a Weyl group W, then ...
Simona Settepanella
core  

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