Results 91 to 100 of about 1,113 (200)

Cohomological dimension and global dimension of algebras [PDF]

open access: yesProceedings of the American Mathematical Society, 1972
Let R be a regular local ring and A an algebra over R which is an R-progenerator. Defining the cohomological dimension of A as R-dim A=l hdAe(A), one obtains the Hochschild cohomological dimension of A as an R-algebra. We show the following under the additional hypothesis that R-dim A is finite: (1) R-dim A =n iff A/N is R-separable and l hdA(A/N)=n+gl
openaire   +2 more sources

Bredon cohomological dimensions for proper actions and Mackey functors [PDF]

open access: yes, 2015
For groups with a uniform bound on the length of chains of finite subgroups, we study the relationship between the Bredon cohomological dimension for proper actions and the notions of cohomological dimension one obtains by restricting the coefficients of
Degrijse, Dieter Dries
core   +1 more source

A Note on Artinianess of Certain Generalized [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2008
Let ?: R0?R be a ring homomorphism and suppose that a and a0, respectively, are ideals of R and R0 such that is an Artinian ring. Let M and N be two finitely generated R-modules and suppose that (R0,m0) is a local ring. In this note we prove that the R-
doaj  

Generalized cohomological dimension

open access: yesJournal of Pure and Applied Algebra, 1986
The cohomological dimension cd of a group G is an invariant which is extremely sensitive to the presence of torsion. There are several ways to reduce this sensitivity. An easy alternative is to use \(cd_{{\mathbb{Q}}}G\) instead of \(cd_{{\mathbb{Z}}}G\) or the virtual cohomological dimension vcd G. In the paper under review, a new invariant is defined
openaire   +2 more sources

On the cohomological dimension of the moduli space of Riemann surfaces [PDF]

open access: yes, 2016
The moduli space of Riemann surfaces of genus g ≥ 2 is (up to a finite étale cover) a complex manifold and so it makes sense to speak of its Dolbeault cohomological dimension. The conjecturally optimal bound is g−2.
MONDELLO, GABRIELE, Gabriele Mondello
core   +1 more source

Dimension in Bredon cohomology

open access: yesJournal of Pure and Applied Algebra, 1994
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

BV equivalence with boundary. [PDF]

open access: yesLett Math Phys, 2023
Simão FMC, Cattaneo AS, Schiavina M.
europepmc   +1 more source

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