Results 51 to 60 of about 124 (115)

Summability Methods in Weighted Approximation to Derivatives of Functions [PDF]

, 2015
In this paper, we use summability methods on the approximation to derivatives of functions by a family of linear operators acting on weighted spaces. This point of view enables us to overcome the lack of ordinary convergence in the approximation.
Duman, Oktay, Küçük, Nisa
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LP → LQ - Estimates for the Fractional Acoustic Potentials and some Related Operators [PDF]

, 2005
Mathematics Subject Classification: 47B38, 31B10, 42B20, 42B15.We obtain the Lp → Lq - estimates for the fractional acoustic potentials in R^n, which are known to be negative powers of the Helmholtz operator, and some related operators. Some applications
Karasev, Denis, Karapetyants, Alexey, Nogin, Vladimir   +2 more
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Generalized Hausdorff operator on Bergmann spaces

Concrete Operators, 2023
In this article, we considered the generalized Hausdorff operator ℋμ,ϕ,a{{\mathcal{ {\mathcal H} }}}_{\mu ,\phi ,a} on Bergmann space and determined the conditions on ϕ\phi and aa so that the operator is bounded.
Perumal Sasikala, Kamalakkannan Kalaivani   +1 more
doaj   +1 more source

WEIGHTED BESOV AND TRIEBEL–LIZORKIN SPACES ASSOCIATED WITH OPERATORS AND APPLICATIONS

Forum of Mathematics, Sigma, 2020
Let $X$ be a space of homogeneous type and $L$ be a nonnegative self-adjoint operator on $L^{2}(X)$ satisfying Gaussian upper bounds on its heat kernels.
HUY-QUI BUI, THE ANH BUI, XUAN THINH DUONG   +2 more
doaj   +1 more source

Weighted composition followed by differentiation between weighted Banach spaces of holomorphic functions [PDF]

, 2011
2010 Mathematics Subject Classification: 47B33, 47B38.Let f be an analytic self-map of the open unit disk D in the complex plane and y be an analytic map on D.
Wolf, Elke
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Weighted composition operators on bicomplex Lorentz spaces with their characterization and properties

Demonstratio Mathematica
This article presents a characterization of non-singular measurable transformation, denoted as TT, mapping from Ω\Omega to itself, along with bicomplex-valued BC{\mathbb{BC}}-measurable function uu defined on Ω\Omega , which induces a weighted ...
Eryılmaz İlker
doaj   +1 more source

Standard triangularization of semigroups of non-negative operators

CODEN: JFUAAW; MRCLASS: 47D03 (47A15 47B38 47B65); MRNUMBER: MR2108364 (2005m:47086); MRREVIEWER: Roman Drnov{\v{s}}ekSource type: Electronic ...

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Operators commuting with complex symmetric weighted composition operators on H 2

Concrete Operators
In this article, we initially study when an anti-linear Toeplitz operator is in the commutant of a composition operator. Primarily, we investigate weighted composition operators Wg,ψ{W}_{g,\psi } commuting with complex symmetric weighted composition ...
Bhuia Sudip Ranjan
doaj   +1 more source

Some Hardy's inequalities on conformable fractional calculus

Demonstratio Mathematica
In this article, we will demonstrate some Hardy’s inequalities by utilizing Hölder inequality, integration by parts, and chain rule of the conformable fractional calculus.
AlNemer Ghada, Saker Samir H., Ashry Gehad M., Zakarya Mohammed, Rezk Haytham M., Kenawy Mohammed R.   +5 more
doaj   +1 more source

Prado-Bassas, Holomorphic operators generating dense images

, 2020
. The existence of infinite dimensional closed linear spaces of holomorphic functions f on a domain G in the complex plane such that T f has dense images on certain subsets of G, where T is a continuous linear operator, is analyzed.
J A Prado-Bassas, M C Calderón-Moreno, L Bernal-González   +2 more
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