Results 21 to 30 of about 77,990 (266)

Third-order differential subordination and superordination involving a fractional operator

open access: yesOpen Mathematics, 2015
The third-order differential subordination and the corresponding differential superordination problems for a new linear operator convoluted the fractional integral operator with the Carlson-Shaffer operator, are investigated in this study.
Ibrahim Rabha W.   +2 more
doaj   +1 more source

A Characterization of Differential Operators [PDF]

open access: yesProceedings of the American Mathematical Society, 1967
In this paper we shall give an algebraic characterization of differential-difference operators, i.e. a characterization of those continuous linear operators from D(Rn) into L2(Rn) which can be constructed by combining partial differential operators, multiplications by locally L functions, and translation operators.
openaire   +1 more source

On Inequalities for Differential Operators [PDF]

open access: yesProceedings of the American Mathematical Society, 1958
In this paper we study the following problem: Given that certain functionals of u u and its derivatives belong to given L ...
openaire   +1 more source

Generalized Briot-Bouquet Differential Equation Based on New Differential Operator with Complex Connections

open access: yesAxioms, 2020
A class of Briot–Bouquet differential equations is a magnificent part of investigating the geometric behaviors of analytic functions, using the subordination and superordination concepts. In this work, we aim to formulate a new differential operator with
Rabha W. Ibrahim   +2 more
doaj   +1 more source

Estimates of Solutions of Elliptic Differential-Difference Equations with Degeneration

open access: yesСовременная математика: Фундаментальные направления, 2018
We consider a second-order differential-difference equation in a bounded domain Q ⊂ Rn. We assume that the differential-difference operator contains some difference operators with degeneration corresponding to differentiation operators.
V A Popov
doaj   +1 more source

GMRES for the Differentiation Operator [PDF]

open access: yesSIAM Journal on Numerical Analysis, 2009
We investigate using the gmres method with the differentiation operator. This operator is unbounded and thus does not fall into the framework of existing Krylov subspace theory. We establish conditions under which a function can be approximated by its own derivatives in a domain of the complex plane.
openaire   +1 more source

Differential evolution with biological-based mutation operator

open access: yesEngineering Science and Technology, an International Journal, 2020
Evolutionary algorithms are swiftly gaining recognition where the application of the same in solving complex real-world problems is beneficial. One of the best well known Evolutionary algorithms is Differential Evolution (DE).
Shashi Prabha, Raghav Yadav
doaj   +1 more source

The nonlocal problem for the differential-operator equation of the even order with the involution

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2018
In this paper, the problem with boundary nonself-adjoint conditions for a differential-operator equations of the order $2n$ with involution is studied. Spectral properties of operator of the problem is investigated.
Ya.O. Baranetskij   +3 more
doaj   +1 more source

Differential Subordination and Superordination of Multivalent Functions Involving Differential Operator

open access: yesAl-Mustansiriyah Journal of Science, 2021
In the present work, we derive some properties of subordination and superordination results associated with the Hadamard product concept involving the composition of the differential operator.
Huda Fawzi Isawi, Abdul Rahman S. Juma
doaj   +1 more source

Operator Differentiable Functions

open access: yesPublications of the Research Institute for Mathematical Sciences, 2000
We study the Banach {}^* -algebra C^1_{\mathrm{op}}(I) of C^1 -functions on the ...
openaire   +2 more sources

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