Results 41 to 50 of about 153,178 (286)

Some applications of differential subordination [PDF]

open access: yesBulletin of the Australian Mathematical Society, 1985
Let Sa (h) denote the class of analytic functions f on the unit disc E with f (0) =0 = f′ (0) −1 satisfying , where (a real), denotes the Hadamard product of Ka with f, and h is a convex univalent function on E, with Re h > 0. Let . It is proved that F ε Sa (h) whenever f ε Sa (h) and also that for a ≥ 1.
K. S. Padmanabhan, R. Parvatham
openaire   +2 more sources

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

Starlikeness Using Special Functions and Subordination [PDF]

open access: yesarXiv, 2023
The association of subordination and special functions is used to find sharp estimates on the parameter $\beta$ such that the analytic function $p(z)$ is subordinate to certain functions having positive real part whenever $p(z)+\beta z p'(z)$ is subordinate to the Janowski function.
arxiv  

Differential subordination and argumental property

open access: yesComputers & Mathematics with Applications, 2008
AbstractFor analytic functions f(z) in the open unit disk E and convex functions g(z) in E, Ch. Pommerenke [Ch. Pommerenke, On close-to-convex analytic functions, Trans. Amer. Math. Soc. 114 (1) (1965) 176–186] has proved one theorem which is a generalization of the result by K. Sakaguchi [K. Sakaguchi, On a certain univalent mapping, J. Math.
Mamoru Nunokawa   +4 more
openaire   +2 more sources

Fuzzy Differential Subordination and Superordination Results Involving the q-Hypergeometric Function and Fractional Calculus Aspects

open access: yesMathematics, 2022
The concepts of fuzzy differential subordination and superordination were introduced in the geometric function theory as generalizations of the classical notions of differential subordination and superordination.
Alina Alb Lupaş, Georgia Irina Oros
doaj   +1 more source

Differential Subordination implications for Certain Carathéodory functions [PDF]

open access: yesarXiv, 2021
In this article, we wish to establish some first order differential subordination relations for certain Carath\'{e}odory functions with nice geometrical properties. Moreover, several implications are determined so that the normalized analytic function belongs to various subclasses of starlike functions.
arxiv  

Some applications of differential subordination

open access: yesApplied Mathematics Letters, 2007
AbstractThe authors introduce a two-parameter function G(p,λ;z) which is shown to play an important rôle in a unified presentation of many interesting subclasses of analytic and p-valent functions in the open unit disk U. Making use of the familiar principle of differential subordination, several properties and relationships involving the function G(p ...
Adel A. Attiya, Hari M. Srivastava
openaire   +2 more sources

On The Third-Order Complex Differential Inequalities of ξ-Generalized-Hurwitz–Lerch Zeta Functions

open access: yesMathematics, 2020
In the z- domain, differential subordination is a complex technique of geometric function theory based on the idea of differential inequality. It has formulas in terms of the first, second and third derivatives.
Hiba Al-Janaby   +2 more
doaj   +1 more source

New fuzzy differential subordinations

open access: yesCommunications Faculty Of Science University of Ankara Series A1Mathematics and Statistics, 2021
In this paper, some new fuzzy differential subordinations obtained by using the integral operator Im γ : An →An  introduced in [13] are obtained.
openaire   +4 more sources

Certain Results on Fuzzy p-Valent Functions Involving the Linear Operator

open access: yesMathematics, 2023
The idea of fuzzy differential subordination is a generalisation of the traditional idea of differential subordination that evolved in recent years as a result of incorporating the idea of fuzzy set into the field of geometric function theory.
Ekram Elsayed Ali   +3 more
doaj   +1 more source

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