Results 71 to 80 of about 111,899 (306)

Some Notes on Relative Commutators

open access: yesInPrime, 2020
Let G be a group and α ϵ Aut(G).  An α-commutator of elements x, y ϵ G is defined as [x, y]α = x-1y-1xyα. In 2015, Barzegar et al. introduced an α-commutator of elements of G and defined a new generalization of nilpotent groups by using the definition of
Masoumeh Ganjali, Ahmad Erfanian
doaj   +1 more source

Variation inequalities for rough singular integrals and their commutators on Morrey spaces and Besov spaces

open access: yesAdvances in Nonlinear Analysis, 2021
This paper is devoted to investigating the boundedness, continuity and compactness for variation operators of singular integrals and their commutators on Morrey spaces and Besov spaces.
Zhang Xiao, Liu Feng, Zhang Huiyun
doaj   +1 more source

Fluctuation, dissipation, and thermalization in non-equilibrium AdS_5 black hole geometries

open access: yes, 2011
We give a simple recipe for computing dissipation and fluctuations (commutator and anti-commutator correlation functions) for non-equilibrium black hole geometries.
Derek Teaney   +4 more
core   +1 more source

A Short Proof of Commutator Estimates [PDF]

open access: yes, 2017
The goal of this note is to give, at least for a restricted range of indices, a short proof of homogeneous commutator estimates for fractional derivatives of a product, using classical tools.
P. D’Ancona
semanticscholar   +1 more source

Quasiperiodic and mixed commutator factorizations in free products of groups [PDF]

open access: yesBulletin of the London Mathematical Society, 2017
It is well known that a nontrivial commutator in a free group is never a proper power. We prove a theorem that generalizes this fact and has several worthwhile corollaries.
S. Ivanov, A. Klyachko
semanticscholar   +1 more source

A note on commutators of strongly singular Calderón-Zygmund operators

open access: yesOpen Mathematics, 2022
In this article, the authors consider the commutators of strongly singular Calderón-Zygmund operator with Lipschitz functions. A sufficient condition is given for the boundedness of the commutators from Lebesgue spaces Lp(Rn){L}^{p}\left({{\mathbb{R ...
Zhang Pu, Zhu Xiaomeng
doaj   +1 more source

Igfbp2 Downregulation in PVT‐CeA Glutamatergic Circuits Drives Neonatal Anesthesia‐Induced Fear Memory Deficits

open access: yesAdvanced Science, EarlyView.
Repeated neonatal sevoflurane exposure impairs adolescent fear memory through Igfbp2 downregulation in paraventricular thalamus‐central amygdala glutamatergic projections. Restoring Igfbp2 or activating this circuit rescues memory deficits, neuronal excitability, and spine density, identifying a precise molecular target for preventing anesthesia ...
Weiming Zhao   +16 more
wiley   +1 more source

Compactness of commutators of fractional integral operators on ball Banach function spaces

open access: yesAIMS Mathematics
Let $ 0 < \alpha < n $ and $ b $ be a locally integrable function. In this paper, we obtain the characterization of compactness of the iterated commutator $ (T_{\Omega, \alpha})_{b}^{m} $ generated by the function $ b $ and the fractional integral ...
Heng Yang, Jiang Zhou
doaj   +1 more source

Isometric endomorphisms of free groups [PDF]

open access: yes, 2011
An arbitrary homomorphism between groups is nonincreasing for stable commutator length, and there are infinitely many (injective) homomorphisms between free groups which strictly decrease the stable commutator length of some elements. However, we show in
Calegari, Danny, Walker, Alden
core   +1 more source

Polyhedral products and commutator subgroups of right-angled Artin and Coxeter groups [PDF]

open access: yes, 2016
We construct and study polyhedral product models for classifying spaces of right-angled Artin and Coxeter groups, general graph product groups and their commutator subgroups.
T. Panov, Yakov Veryovkin
semanticscholar   +1 more source

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