Results 81 to 90 of about 2,135 (235)

On the cohomology of tori over local fields with perfect residue field [PDF]

, 2013
Alessandra Bertapelle, Cristian D. González-Avilés   +1 more
openalex   +1 more source

Maps on the Mirror Heisenberg–Virasoro Algebra

Mathematics
Using the first cohomology from the mirror Heisenberg–Virasoro algebra to the twisted Heisenberg algebra (as the mirror Heisenberg–Virasoro algebra module), in this paper, we determined the derivations on the mirror Heisenberg–Virasoro algebra.
Xuelian Guo, Ivan Kaygorodov, Liming Tang   +2 more
doaj   +1 more source

The resolvent cocycle in twisted cyclic cohomology and a local index formula for the Podles sphere [PDF]

, 2011
Adam Rennie, Roger Senior
openalex   +1 more source

Local cohomology and base change

Journal of Algebra, 2018
Let $X \overset{f}\longrightarrow S$ be a morphism of Noetherian schemes, with $S$ reduced. For any closed subscheme $Z$ of $X$ finite over $S$, let $j$ denote the open immersion $X\setminus Z \hookrightarrow X$. Koll r asked whether for any coherent sheaf $\mathcal F$ on $X\setminus Z$ and any index $r\geq 1$, the sheaf $f_*(R^rj_*\mathcal F)$ is ...
openaire   +3 more sources

Toward an efficient algorithm for deciding the vanishing of local cohomology modules in prime characteristic [PDF]

, 2014
Yi Zhang
openalex   +1 more source

Off-shell fields and conserved currents

Physics Letters B
We study interactions of higher-spin massless fields φ with conserved currents multilinear in the off-shell matter fields ϕ. Specifically, we focus on the 3d case where a slight modification of the σ−-cohomology technique developed earlier is directly ...
E.O. Spirin, M.A. Vasiliev
doaj   +1 more source

Duality and local group cohomology [PDF]

Proceedings of the American Mathematical Society, 1998
Let G G be a group, let k k be a field, and let L {\mathcal {L}} be a local system — an upwardly directed collection of subgroups whose union is G G . In this paper we give a short, elementary proof of the following result: If either A A
openaire   +2 more sources

COFINITENESS AND ARTINIANNESS OF GENERALIZED LOCAL COHOMOLOGY MODULES

Romanian Journal of Mathematics and Computer Science, 2015
Let R be a commutative Noetherian ring, a and b ideals of R and let M and N be two finitely generated R-modules. In this paper, we study the cofiniteness of H_b^j(H_a^i(M, N)) in several cases.
FATEMEH DEHGHANI-ZADEH
doaj  

Hodge–Lyubeznik numbers

Comptes Rendus. Mathématique
We define a Hodge-theoretical refinement of the Lyubeznik numbers for local rings of complex algebraic varieties. We prove that these numbers are independent of the choices made in their definition and that, for the local ring of an isolated singularity,
García López, Ricardo, Sabbah, Claude
doaj   +1 more source

Complexity of Supersymmetric Systems and the Cohomology Problem [PDF]

Quantum
We consider the complexity of the local Hamiltonian problem in the context of fermionic Hamiltonians with $\mathcal N=2 $ supersymmetry and show that the problem remains $\mathsf{QMA}$-complete.
Chris Cade, P. Marcos Crichigno
doaj   +1 more source