Results 21 to 30 of about 29,708 (278)

Coefficient estimates for some classes of p-valent functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1988
Let Ap, where p is a positive integer, denote the class of functions f(z)=zp+∑n=p+1anzn which are analytic in U={z:|z|
M. K. Aouf
doaj   +1 more source

Vaccination against Streptococcus pneumoniae in Children Born between 2015 and 2018 in Poland—How Has the Introduction of Free Compulsory Pneumococcal Vaccination Affected Its Uptake?

open access: yesVaccines, 2023
Starting from 2017, pneumococcal vaccination was added to the Polish vaccination calendar as mandatory for all children born after 2016. The 10-valent conjugate vaccine was selected as mandatory and therefore free of charge.
Wojciech Malchrzak   +2 more
doaj   +1 more source

ON CERTAIN MEROMORPHIC P-VALENT FUNCTIONS

open access: yesTaiwanese Journal of Mathematics, 1998
Summary: A certain differential operator \(D^n\) is introduced for functions of the form \(f(z)={1\over z^p}+\sum^\infty_{k=0}a_kz^k\) which are analytic in \(E^*=\{z ...
LIU, JINLIN, OWA, SHIGEYOSHI
openaire   +4 more sources

CONVEXITY PROPERTIES OF A NEW GENERAL INTEGRAL OPERATOR OF p-VALENT FUNCTIONS [PDF]

open access: yes, 2014
In this paper, we introduce a new general integral operator and obtain the order of convexity of this integral ...
Bulut, Serap
core   +1 more source

A remark on certain p-valent functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1996
The object of the present paper is to prove an interesting result for certain analytic and p-valent functions in the unit disc U={z:|z|
M. K. Aouf, H. E. Darwish
doaj   +1 more source

The Relationships Between p−valent Functions and Univalent Functions

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2015
In this paper, we obtain some sufficient conditions for general p−valent integral operators to be the p−th power of a univalent functions in the open unit disk.
Çağlar Murat
doaj   +1 more source

On some differential subordination theorems of multivalent functions involving integral operator

open access: yesJournal of Kufa for Mathematics and Computer, 2022
Notice of Retraction: Post-publication review of this paper by an expert committee revealed a violation of JoKMC's publication principles. Strong similarity of content has been found between this paper and an earlier publication entitled: On ...
Heba Kadhim, Oroba Mahdi, Husham Kareem
doaj   +1 more source

On certain classes of p-Valent functions by using complex-order and differential subordination. [PDF]

open access: yes, 2010
The aim of the present paper is to study the p-valent analytic functions in the unit disk and satisfy the differential subordinations z(Ip)r, ?(f(z))(j+1)/(p - j)(?p(r, ?)f(z))(j) < (a + (aB + (A- B)ß)z)/a(1 + Bz), where ?p(r, ?) is an operator defined ...
Kilicman, Adem, Tehranchi, Abdolreza
core   +2 more sources

On A Class Of P - Valent Functions Defined By Integral Operator

open access: yesJournal of Kufa for Mathematics and Computer, 2013
In this paper , we study a new class  of p-valent functions with negative coefficient defined by   integral operator in the unit disk . We obtain some results of this class .
Rafid Habib Buti, Mustafa Abbas Fadhel
doaj   +1 more source

On a class of p-valent close-to-convex functions of order β and type α

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1988
Let S(A,B,p,α) denote the class of functions g(z)=zp+∑n=p+1∞bnzn analytic in the unit disc U={z:|z|
M. K. Aouf
doaj   +1 more source

Home - About - Disclaimer - Privacy