Results 31 to 40 of about 529,664 (281)

Norm estimates for Bessel-Riesz operators on generalized Morrey spaces [PDF]

open access: yes, 2018
We revisit the properties of Bessel-Riesz operators and refine the proof of the boundedness of these operators on generalized Morrey spaces using Young's inequality. We also obtain an estimate for the norm of these operators on generalized Morrey spaces.
Eridani   +2 more
core   +3 more sources

An integral RB operator [PDF]

open access: yesJournal of Fixed Point Theory and Applications
AbstractWe introduce the novel concept of integral Read–Bajraktarević (iRB) operator and discuss some of its properties. We show that this iRB operator generalizes the known Read–Bajraktarević (RB) operator and we derive conditions for the fixed point of the iRB operator to belong to certain function spaces.
Jahn, Marvin, Massopust, Peter
openaire   +3 more sources

Spiral like integral operators

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1981
In this paper we investigate the Robertson-Libera integral operators for the class of spiral like univalent and analytic functions. We find that special types of transformations preserve the class property.
Shyam K. Bajpai
doaj   +1 more source

The Minkowski inequality involving generalized k-fractional conformable integral

open access: yesJournal of Inequalities and Applications, 2019
In the research paper, the authors exploit the definition of a new class of fractional integral operators, recently proposed by Jarad et al. (Adv. Differ. Equ.
Shahid Mubeen   +2 more
doaj   +1 more source

Rough Marcinkiewicz integral operators

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
We study the Marcinkiewicz integral operator M𝒫f(x)=(∫−∞∞|∫|y|≤2tf(x−𝒫(y))(Ω(y)/|y|n−1)dy|2dt/22t)1/2, where 𝒫 is a polynomial mapping from ℝn into ℝd and Ω is a homogeneous function of degree zero on ℝn with mean value zero over the unit sphere Sn−1. We
Hussain Al-Qassem, Ahmad Al-Salman
doaj   +1 more source

Magnetic Fourier Integral Operators

open access: yes, 2010
In some previous papers we have defined and studied a 'magnetic' pseudodifferential calculus as a gauge covariant generalization of the Weyl calculus when a magnetic field is present. In this paper we extend the standard Fourier Integral Operators Theory
D. Robert   +12 more
core   +1 more source

Integrated Resolvent Operators [PDF]

open access: yesJournal of Integral Equations and Applications, 1995
Der Autor betrachtet die Integro-Differential-Gleichung \[ u'(t)=Au (t)+\int^t_0 B(t-s) u(s) ds+f(t), \quad t\in [ 0,T ], \quad u(0) =x. \tag{VE} \] Dabei ist \(A\) ein linearer abgeschlossener Operator mit (nicht notwendig dichtem) Definitionsbereich \(D(A)\) in einem Banachraum \(X\), der die Hille-Yoshida-Bedingung erfüllt. Es gibt reelle Konstanten
openaire   +2 more sources

New generalized fractional versions of Hadamard and Fejér inequalities for harmonically convex functions

open access: yesJournal of Inequalities and Applications, 2020
The aim of this paper is to establish new generalized fractional versions of the Hadamard and the Fejér–Hadamard integral inequalities for harmonically convex functions.
Xiaoli Qiang   +4 more
doaj   +1 more source

The Dunkl kernel and intertwining operator for dihedral groups

open access: yes, 2020
Dunkl operators associated with finite reflection groups generate a commutative algebra of differential-difference operators. There exists a unique linear operator called intertwining operator which intertwines between this algebra and the algebra of ...
De Bie, Hendrik, Lian, Pan
core   +1 more source

New estimates considering the generalized proportional Hadamard fractional integral operators

open access: yesAdvances in Difference Equations, 2020
In the article, we describe the Grüss type inequality, provide some related inequalities by use of suitable fractional integral operators, address several variants by utilizing the generalized proportional Hadamard fractional (GPHF) integral operator. It
Shuang-Shuang Zhou   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy