Results 21 to 30 of about 10,475 (236)

Weighted Estimates for Maximal Commutators of Multilinear Singular Integrals

open access: yesJournal of Function Spaces and Applications, 2012
This paper is concerned with the pointwise estimates for the sharp function of the maximal multilinear commutators TΣb* and maximal iterated commutator TΠb*, generalized by m-linear operator T and a weighted Lipschitz function b.
Dongxiang Chen, Suzhen Mao
doaj   +1 more source

Medial commutativity

open access: yesAnnals of Pure and Applied Logic, 2007
27 pages, minor ...
Kosta Dosen, Zoran Petric
openaire   +2 more sources

On central commutator Galois extensions of rings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2000
Let B be a ring with 1, G a finite automorphism group of B of order n for some integer n, BG the set of elements in B fixed under each element in G, and Δ=VB(BG) the commutator subring of BG in B.
George Szeto, Lianyong Xue
doaj   +1 more source

A Pair of Derivations on Prime Rings with Antiautomorphism

open access: yesMathematics, 2023
This article examines the commutativity of rings with antiautomorphisms, specifically when they are equipped with derivations that satisfy certain algebraic identities.
Faez A. Alqarni   +4 more
doaj   +1 more source

Commutators and generators.

open access: yesMATHEMATICA SCANDINAVICA, 1988
Let \({\mathcal B}\) be a Banach space, \(\sigma\) a \(C_ 0\)-group of isometries of \({\mathcal B}\) with generator \(H\), and \({\mathcal D}\subseteq D(H)\) a \(\sigma\)-invariant core of \(H\). Suppose \(K:{\mathcal D}\to {\mathcal B}\) is a dissipative operator satisfying \[ 1.\quad \| Ka\| \leq k_ 0(\| Ha\| \vee \| a\|),\quad a\in {\mathcal D}, \]
Batty, Charles J.K., Robinson, Derek W.
openaire   +4 more sources

Making Almost Commuting Matrices Commute [PDF]

open access: yesCommunications in Mathematical Physics, 2009
Suppose two Hermitian matrices $A,B$ almost commute ($\Vert [A,B] \Vert \leq δ$). Are they close to a commuting pair of Hermitian matrices, $A',B'$, with $\Vert A-A' \Vert,\Vert B-B'\Vert \leq ε$? A theorem of H. Lin shows that this is uniformly true, in that for every $ε>0$ there exists a $δ>0$, independent of the size $N$ of the matrices, for ...
openaire   +3 more sources

On conciseness of some commutator words

open access: yes, 2019
We prove that a commutator of two non-commutator words is a concise ...
Pavel Shumyatsky   +3 more
core   +1 more source

A note on rings with certain variables identities

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1989
It is proved that certain rings satisfying generalized-commutator constraints of the form [xm,yn,yn,...,yn]=0 with m and n depending on x and y, must have nil commutator ideal.
Hazar Abu-Khuzam
doaj   +1 more source

On the ternary commutator, I: Exact Mal'tsev categories,

open access: yes, 2021
In this first article on the Bulatov commutator, we introduce a ternary commutator of equivalence relations in the context of an exact Mal'tsev category with binary coproducts. We prove that, for Mal'tsev varieties, our notion is a particular case (where
Simeu, Cyrille Sandry   +1 more
core  

Generating Sets and a Structure of the Wreath Product of Groups with Non-Faithful Group Action

open access: yesInternational Journal of Analysis and Applications, 2020
Given a permutational wreath product sequence of cyclic groups, we investigate its minimal generating set, the minimal generating set for its commutator and some properties of its commutator subgroup.
Ruslan Skuratovskii
doaj  

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