Results 21 to 30 of about 39,333 (245)

Simple sufficient conditions for starlikeness and convexity for meromorphic functions

open access: yesOpen Mathematics, 2016
In this paper we investigate some extensions of sufficient conditions for meromorphic multivalent functions in the open unit disk to be meromorphic multivalent starlike and convex of order α.
Goswami Pranay   +2 more
doaj   +1 more source

Connection coefficients for basic Harish-Chandra series [PDF]

open access: yes, 2014
Basic Harish-Chandra series are asymptotically free meromorphic solutions of the system of basic hypergeometric difference equations associated to root systems.
Askey   +62 more
core   +2 more sources

Fekete–Szegö Problems for Certain Classes of Meromorphic Functions Involving q-Al-Oboudi Differential Operator

open access: yesJournal of Mathematics, 2022
In this paper, we introduce a new derivative operator involving q-Al-Oboudi differential operator for meromorphic functions. By using this new operator, we define a new subclass of meromorphic functions and obtain the Fekete–Szegő inequalities.
M.K. Aouf, Fatma Z. El-Emam
doaj   +1 more source

On the Fourier coefficients of negative index meromorphic Jacobi forms [PDF]

open access: yes, 2015
In this paper, we consider the Fourier coefficients of meromorphic Jacobi forms of negative index. This extends recent work of Creutzig and the first two authors for the special case of Kac-Wakimoto characters which occur naturally in Lie theory, and ...
Bringmann, Kathrin   +2 more
core   +2 more sources

Nonvanishing Meromorphic Univalent Functions [PDF]

open access: yesProceedings of the American Mathematical Society, 1988
This note studies the best constants s s such that the function k ( z ) = z + 2 + 1 / z k(z) = z + 2 + 1/z solves the linear coefficient problems max Re ⁡ { s
Abu-Muhanna, Yusuf, Schober, Glenn
openaire   +2 more sources

Meromorphic solutions of higher order Briot-Bouquet differential equations [PDF]

open access: yes, 2008
For differential equations $P(y^{(k)},y)=0,$ where $P$ is a polynomial, we prove that all meromorphic solutions having at least one pole are elliptic functions, possibly ...
Akhiezer   +13 more
core   +3 more sources

Further Results on Uniqueness of Meromorphic Functions concerning Fixed Points

open access: yesAbstract and Applied Analysis, 2014
We will study the uniqueness problems of meromorphic functions of differential polynomials sharing fixed points. Our results improve or generalize some previous results on meromorphic functions sharing fixed points.
Xiao-Bin Zhang
doaj   +1 more source

Meromorphic functions with missing coefficients defined by $q$-derivative [PDF]

open access: yesJournal of Mahani Mathematical Research, 2023
By considering a fixed point in the punctured unit disk and using the $q$--derivative, a new subfamily of meromorphic and univalent functions is defined.
Shahram Najafzadeh   +3 more
doaj   +1 more source

Meromorphic Functions Sharing a Small Function [PDF]

open access: yesAbstract and Applied Analysis, 2007
We will study meromorphic functions that share a small function, and prove the following result: letf(z)andg(z)be two transcendental meromorphic functions in the complex plane and letn≥11be a positive integer. Assume thata(z)(≢0)is a common small function with respect tof(z)andg(z). Iffnf′andgng′sharea(z)CM, then eitherfn(z)f′(z)gn(z)g′(z)≡a2(z), orf(z)
Wang, Songmin, Gao, Zongsheng
openaire   +4 more sources

Comparative growth analysis of wronskians in the light of their relative orders

open access: yesAnnales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2015
In this paper we study the comparative growth properties of a composition of entire and meromorphic functions on the basis of the relative order (relative lower order) of Wronskians generated by entire and meromorphic functions.
Sanjib Kumar Datta   +2 more
doaj   +1 more source

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