Results 31 to 40 of about 1,699,102 (276)

Quantum entanglement and Bell inequalities in Heisenberg spin chains [PDF]

open access: yes, 2002
We show that in one-dimensional isotropic Heisenberg model two-qubit thermal entanglement and maximal violation of Bell inequalities are directly related with a thermodynamical state function, i.e., the internal energy.
Acín   +31 more
core   +2 more sources

Inequalities for Some Maximal Functions. II [PDF]

open access: yesTransactions of the American Mathematical Society, 1985
Let S S be a smooth compact hypersurface in R n {{\mathbf {R}}^n} , and let μ \mu be a measure on S S , absolutely continuous with respect to surface measure. For t t in
COWLING M., MAUCERI, GIANCARLO
openaire   +4 more sources

Some estimates for commutators of the fractional maximal function on stratified Lie groups

open access: yesJournal of Inequalities and Applications, 2023
In this paper, the main aim is to consider the boundedness of the nonlinear commutator [ b , M α ] $[b, M_{\alpha}]$ and the maximal commutator M α , b $M_{\alpha ,b}$ on the Lebesgue spaces over some stratified Lie group G $\mathbb{G}$ when the symbol b
Jianglong Wu, Wenjiao Zhao
doaj   +1 more source

Continuous submodular function maximization

open access: yes, 2020
Continuous submodular functions are a category of generally non-convex/non-concave functions with a wide spectrum of applications. The celebrated property of this class of functions - continuous submodularity - enables both exact minimization and approximate maximization in poly. time.
Bian, Yatao; id_orcid0000-0002-2368-4084   +2 more
openaire   +3 more sources

Maximal functions of plurisubharmonic functions [PDF]

open access: yesTsukuba Journal of Mathematics, 1992
Let \(B\) denote the unit ball in \(\mathbb{C}^ n\) \((n\geq 1)\) with boundary \(S\). For a function \(u:B\to\mathbb{C}\), the radial maximal function \({\mathcal M}u\) on \(S\) is defined by \[ {\mathcal M}u(\eta)=\sup\{| u(r\eta)|:0\leq r1\), \(\eta\in S\), let \(D_ \alpha(\eta)=\{z:| 1-\langle z,\eta\rangle|
Kim, Hong Oh, Park, Yeon Yong
openaire   +2 more sources

Musielak-Orlicz-Hardy Spaces Associated with Operators Satisfying Reinforced Off-Diagonal Estimates

open access: yesAnalysis and Geometry in Metric Spaces, 2013
Let X be a metric space with doubling measure and L a one-to-one operator of type ω having a bounded H∞ -functional calculus in L2(X) satisfying the reinforced (pL; qL) off-diagonal estimates on balls, where pL ∊ [1; 2) and qL ∊ (2;∞]. Let φ : X × [0;∞) →
Bui The Anh   +4 more
doaj   +1 more source

On Generalized Maximal Functions [PDF]

open access: yesProceedings of the American Mathematical Society, 1993
In this paper we study the question of under what circumstances the quantity | | sup t > ∞ , a ∈ R
openaire   +1 more source

Generalization and Modification of Hardy-Littlewood Maximal Functions

open access: yesJournal of Applied Sciences and Environmental Management, 2018
The purpose of this paper is to provide the different types of Hardy-Littlewood Maximal Functions, the relationship between them and the corresponding extension of ℝn of the Hardy-Littlewood maximal function.
HS Adewinbi, OJ Peter
doaj   +1 more source

A note on maximal operators related to Laplace-Bessel differential operators on variable exponent Lebesgue spaces

open access: yesOpen Mathematics, 2021
In this paper, we consider the maximal operator related to the Laplace-Bessel differential operator (BB-maximal operator) on Lp(⋅),γ(Rk,+n){L}_{p\left(\cdot ),\gamma }\left({{\mathbb{R}}}_{k,+}^{n}) variable exponent Lebesgue spaces.
Kaya Esra
doaj   +1 more source

Maximal Algebras of Continuous Functions [PDF]

open access: yesProceedings of the American Mathematical Society, 1957
in the topology of uniform convergence. In several recent papers John Wermer has considered some difficult special cases. The theorems presented here were suggested by certain of WVermer's results. Let S be the unit circle. Wermer has found a family of subalgebras of C(S) which are maximal among all closed subalgebras of C(S) [1; 2; 3].
Helson, Henry, Quigley, Frank
openaire   +2 more sources

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