Results 141 to 150 of about 24,623 (305)
On the cohomology of finite‐dimensional nilpotent groups and Lie rings
Bulletin of the London Mathematical Society, Volume 58, Issue 6, June 2026.Abstract We establish vanishing results for the first cohomology group of nilpotent groups and Lie rings when the submodule of invariants is trivial. Our results are obtained within a model‐theoretic setting, namely for structures that are definable in a finite‐dimensional theory, which encompasses algebraic groups over algebraically closed fields ...
Samuel Zamour
wiley +1 more source
Commutativity of Up- and Downsampling
, 1992 In [1], [2] a technique for the construction of perfect reconstruction filter banks with division into nonuniform channels is introduced. This construction uses the commutativity of subsampling and upsampling.
A. A. C. M. Kalker
core
On commutativity of projectors
, 2008 It is shown that commutativity of two oblique projectors is equivalent with their product idempotency if both projectors are not necessarily Hermitian but orthogonal with respect to the same inner ...
Kala, Radosław, Radosław Kala
core +1 more source
Generalized (τ, σ)-L-Derivations in Rings
MathematicsLet τ and σ:X⟶X be automorphisms of an arbitrary associative ring X, and let L be a prime ideal of X. The main objective of this article is to combine the notions of generalized L-derivations and (τ,σ)-L-derivations by introducing and analyzing a novel ...
Hicham Saber +5 more
doaj +1 more source
Non-commutative extensions of classical theories in physics [PDF]
, 2000 Richard Kerner
openalex +1 more source
Rickard's derived Morita theory: Review and outlook
Journal of the London Mathematical Society, Volume 113, Issue 6, June 2026.Abstract We survey the main results in Jeremy Rickard's seminal papers ‘Morita theory for derived categories’ and ‘Derived equivalences and derived functors’. These papers catalysed the later development of the Morita theory of (enhanced) compactly generated triangulated categories by Keller in the algebraic setting and by Schwede and Shipley in the ...
Gustavo Jasso +2 more
wiley +1 more source
, 2020 Ett område inom matematik som elever arbetar mycket med i skolan är aritmetik, vilket innebär hur de fyra räknesätten fungerar och kan användas. Dessa räknesätt har olika egenskaper, en av dessa egenskaper, som innehas av addition och mutliplikation, är ...
Jansson, Malin
core
On the commutativity of states in von Neumann algebras
, 2014 The notion of commutativity of two normal states on a von Neumann algebra was defined some time ago by means of the Pedersen-Takesaki theorem. In this note we aim at generalizing this notion to an arbitrary number of states, and obtaining some results on
Łuczak, Andrzej
core +1 more source
The N‐prime graph and the Subgroup Isomorphism Problem
Journal of the London Mathematical Society, Volume 113, Issue 6, June 2026.Abstract We introduce a directed graph related to a group G$G$, which we call the N‐prime graph ΓN(G)$\Gamma _{\rm {N}}(G)$ of G$G$ and is a refinement of the classical Gruenberg–Kegel graph. The vertices of ΓN(G)$\Gamma _{\rm {N}}(G)$ are the primes p$p$ such that G$G$ has an element of order p$p$, and, for distinct vertices p$p$ and q$q$, the arc q→p$
Emanuele Pacifici +2 more
wiley +1 more source