Results 11 to 20 of about 4,247 (224)

Meromorphic Functions and Smooth Analytic Functions [PDF]

open access: yesProceedings of the American Mathematical Society, 1976
Meromorphic functions with many zeroes can have logarithmic derivatives that are relatively smooth. We prove this, with a new construction of smooth analytic functions with many zeroes. Our examples belong to the theory of differential fields of functions.
Robert Kaufman
openaire   +3 more sources

On unavoidable families of meromorphic functions [PDF]

open access: yes, 2023
peer reviewedWe prove several results on unavoidable families of meromorphic functions. For instance, we give new examples of families of cardinality three that are unavoidable with respect to the set of meromorphic functions on $\C$.
MEYRATH, Thierry
core   +1 more source

Meromorphic functions sharing two sets [PDF]

open access: yes, 2007
summary:In the paper we discuss the uniqueness problem for meromorphic functions that share two sets and prove five theorems which improve and supplement some results earlier given by Yi and Yang [13], Lahiri and Banerjee [5]
Mandal, Rajib   +3 more
core   +6 more sources

Majorization for certain classes of meromorphic functions defined by integral operator [PDF]

open access: yes, 2016
Here we investigate a majorization problem involving starlike meromorphic functions of complex order belonging to a certain subclass of meromorphic univalent functions defined by an integral operator introduced recently by ...
Goyal, S. P., Goswami, Pranay
core   +2 more sources

A subclass of harmonic meromorphic functions [PDF]

open access: yes, 2007
Complex-valued harmonic meromorphic functions that are univalent and orientation preserving outside the unit circle Ũ can be written in the form f = h + g, where h and g are analytic in Ũ.
Aini Janteng, Suzeini Abdul Halim
core   +1 more source

Applications‎ ~‎of $Q$-hypergeometric and Hurwitz‎-Lerch Zeta Functions on Meromorphic Functions [PDF]

open access: yesMathematics Interdisciplinary Research, 2023
‎A new subclass of meromorphic univalent functions by using the q-hypergeometric and Hurwitz-Lerch Zeta functions is defined‎. ‎Also‎, ‎by applying the generalized Liu-Srivastava operator on meromorphic functions‎, ‎some geometric properties of the new ...
Seyed Hadi Sayedain Boroujeni   +1 more
doaj   +1 more source

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

ON MULTIVALENT HARMONIC MEROMORPHIC FUNCTIONS INVOLVING HYPERGEOMETRIC FUNCTIONS [PDF]

open access: yesالمجلة العراقية للعلوم الاحصائية, 2011
In this paper we introduce a subclass of multivalent harmonic meromorphic functions defined in the exterior of the unit disk by using generalize hypergeometric functions.
ABDULRAHMAN SALMAN JUMA
doaj   +1 more source

Uniqueness of meromorphic functions when two non-linear differential polynomials share a small function [PDF]

open access: yes, 2005
summary:In the paper we deal with the uniqueness of meromorphic functions when two non-linear differential polynomials generated by two meromorphic functions share a small ...
Abhijit Banerjee   +10 more
core   +1 more source

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

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