Results 21 to 30 of about 47,156 (226)

Commutator rings [PDF]

open access: yesBulletin of the Australian Mathematical Society, 2006
A ring is called a commutator ring if every element is a sum of additive commutators. In this note we give examples of such rings. In particular, we show that given any ring R, a right R-module N, and a nonempty set Ω, EndR(⌖ΩN) and EndR(ΠΩN) are commutator rings if and only if either Ω is infinite or EndR(N) is itself a commutator ring.
openaire   +3 more sources

Commutant lifting for commuting row contractions [PDF]

open access: yesBulletin of the London Mathematical Society, 2010
one section and references were ...
Davidson, Kenneth R., Le, Trieu
openaire   +2 more sources

Comment about UV regularization of basic commutators in string theories [PDF]

open access: yes, 1998
Recently proposed by Hwang, Marnelius and Saltsidis zeta regularization of basic commutators in string theories is generalized to the string models with non-trivial vacuums.
A. Yu. Kamenshchik   +13 more
core   +3 more sources

Interchange integral characteristics study via microscopic traffic flow models [PDF]

open access: yesКомпьютерные исследования и моделирование, 2014
The problem of application of miscroscopic traffic models for the analysis of large network segments is discussed with an example of discrete flow with safe distance.
Ivan Nikolayevich Kalinin   +1 more
doaj   +1 more source

Endpoint Estimates for Fractional Hardy Operators and Their Commutators on Hardy Spaces

open access: yesJournal of Function Spaces, 2014
(Hpℝn,Lqℝn) bounds of fractional Hardy operators are obtained. Moreover, the estimates for commutators of fractional Hardy operators on Hardy spaces are worked out.
Jiang Zhou, Dinghuai Wang
doaj   +1 more source

Upper Bound for Multi-parameter Iterated Commutators [PDF]

open access: yes, 2015
We show that the product BMO space can be characterized by iterated commutators of a large class of Calder\'on-Zygmund operators. This result follows from a new proof of boundedness of iterated commutators in terms of the BMO norm of their symbol ...
Dalenc, Laurent, Ou, Yumeng
core   +3 more sources

Some weighted inequalities for Hausdorff operators and commutators

open access: yesJournal of Inequalities and Applications, 2018
In this paper, we consider the problem of boundedness of Hausdorff operator on weighted central Morrey spaces. In particular, we obtain sharp bounds for Hausdorff operators on power weighted central Morrey spaces. Analogous results for the commutators of
Amjad Hussain, Amna Ajaib
doaj   +1 more source

Counting Commutators [PDF]

open access: yesTransactions of the American Mathematical Society, 1974
Let G be a group generated by x and y, G 2 {G_2} be the commutator subgroup of G, and G 1 {G_1} be the group generated by y and G 2 {G_2} . This paper contains explicit expansions of
openaire   +2 more sources

Boundedness of rough singular integral operators and commutators on Morrey-Herz spaces with variable exponents

open access: yesJournal of Inequalities and Applications, 2016
By decomposing functions, we establish some boundedness results for some rough singular integrals on the homogeneous Morrey-Herz spaces M K ˙ q , p ( ⋅ ) α ( ⋅ ) , λ ( R n ) $M\dot{K}_{q, p(\cdot)}^{\alpha(\cdot),\lambda}({\Bbb{ R}}^{n})$ , where the two
Liwei Wang, Meng Qu, Lisheng Shu
doaj   +1 more source

Multiple commutator formulas [PDF]

open access: yesIsrael Journal of Mathematics, 2012
Let A be a quasi-finite R-algebra (i.e., a direct limit of module finite algebras) with identity. Let I_i, i=0,...,m, be two-sided ideals of A, \GL_n(A,I_i) the principal congruence subgroup of level I_i in GL_n(A) and E_n(A,I_i) be the relative elementary subgroup of level I_i.
Hazrat, Roozbeh (R16959), Zhang, Zuhong
openaire   +4 more sources

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