Results 31 to 40 of about 70,693 (320)

Operators with commutative commutants.

open access: yesMichigan Mathematical Journal, 1988
Soit N un operateur normal qui est une transformee quasi affine d'un operateur normal M. On montre que si M (resp. N) est la somme directe de k (resp. m) copies d'un operateur A ayant un commuttant commutatif, ou m et k sont des cardinalites denombrables, et si N est un transforme quasi affine de M, alors k ...
Radjabalipour, M., Radjavi, H.
openaire   +2 more sources

A Method for Choosing an Initial Time Eigenstate in Classical and Quantum Systems

open access: yesEntropy, 2013
A subject of interest in classical and quantum mechanics is the development of the appropriate treatment of the time variable. In this paper we introduce a method of choosing the initial time eigensurface and how this method can be used to generate time ...
Mónica Noemí Jiménez-García   +1 more
doaj   +1 more source

On Commuting and Noncommuting Complexes [PDF]

open access: yesJournal of Algebra, 2001
In this paper we study various simplicial complexes associated to the commutative structure of a finite group G. We define NC(G) (resp. C(G)) as the complex associated to the poset of pairwise non-commuting (resp. commuting) sets in G. We observe that NC(G) has only one positive dimensional connected component, which we call BNC(G), and we prove that ...
Jonathan Pakianathan, Ergün Yalçın
openaire   +2 more sources

Commutators of multilinear Calderón-Zygmund operators with kernels of Dini's type and applications

open access: yesJournal of Mathematical Inequalities, 2019
. Let T be a multilinear Calder´on-Zygmund operator of type ω with ω ( t ) being non- decreasing and satisfying a kind of Dini’s type condition. Let T Π (cid:2) b be the iterated commutators of T with BMO functions. The weighted strong and weak L ( log L
Pu Zhang, ie Sun
semanticscholar   +1 more source

Commutators of singular integrals revisited [PDF]

open access: yesBulletin of the London Mathematical Society, 2017
We obtain a Bloom‐type characterization of the two‐weighted boundedness of iterated commutators of singular integrals. The necessity is established for a rather wide class of operators, providing a new result even in the unweighted setting for the first ...
A. Lerner, S. Ombrosi, I. Rivera-Ríos
semanticscholar   +1 more source

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

Of Commutators and Jacobians [PDF]

open access: yes, 2021
I discuss the prescribed Jacobian equation $Ju=\det\nabla u=f$ for an unknown vector-function $u$, and the connection of this problem to the boundedness of commutators of multiplication operators with singular integrals in general, and with the Beurling operator in particular. A conjecture of T. Iwaniec regarding the solvability for general datum $f\in
openaire   +4 more sources

How to commute [PDF]

open access: yesAdvanced Studies in Theoretical Physics, 2016
6 pages, Latex, one new chapter and a new contributing author ...
Aste, Andreas, Chung, Won Sang
openaire   +5 more sources

Multilinear fractional integral operators on non-homogeneous metric measure spaces

open access: yesJournal of Inequalities and Applications, 2016
In this paper, the boundedness in Lebesgue spaces for multilinear fractional integral operators and commutators generated by multilinear fractional integrals with an RBMO ( μ ) $\operatorname{RBMO}(\mu)$ function on non-homogeneous metric measure spaces ...
Huajun Gong, Rulong Xie, Chen Xu
doaj   +1 more source

Estimates for a Rough Fractional Integral Operator and Its Commutators on p-Adic Central Morrey Spaces

open access: yesFractal and Fractional, 2022
In the current paper, we obtain the boundedness of a rough p-adic fractional integral operator on p-adic central Morrey spaces. Moreover, we establish the λ-central bounded mean oscillations estimate for commutators of a rough p-adic fractional integral ...
Naqash Sarfraz, Fahd Jarad
doaj   +1 more source

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