Results 21 to 30 of about 28,953 (166)

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 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

Macrolide susceptibility and serotype specific macrolide resistance of invasive isolates of Streptococcus pneumoniae in Germany from 1992 to 2008

open access: yesBMC Microbiology, 2010
Background Macrolide resistant Streptococcus pneumoniae has been on a gradual increase in Germany for over a decade. The current study was undertaken against the background of the recent observation of declining macrolide resistance rates especially ...
Mutscher Christina   +3 more
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

$(s,p)$-Valent Functions

open access: yes, 2015
arXiv admin note: text overlap with arXiv:1102 ...
Friedland, Omer, Yomdin, Yosef
openaire   +2 more sources

On coefficient bounds of a certain class of p-valent λ-spiral functions of order α

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1987
Let Sλ(A,B,p,α)(|λ|
M. K. Aouf
doaj   +1 more source

Study of the adsorption of reactive blue 50 on zero valent iron

open access: yesMongolian Journal of Chemistry, 2014
 In this study, removal efficiency of the Reactive blue 50 and adsorption mechanism on the zero valent iron were investigated. Reactive blue 50 which is used to wool and cashmere dyeing were selected due its non-biodegradable and metabolic stability ...
D Sarangerel   +3 more
doaj   +1 more source

Coefficient bounds for \(p\)-valent functions

open access: yesOpen Journal of Mathematical Analysis, 2023
This present paper introduces two new subclasses of p-valent functions. The coefficient bounds and Fekete-Szego inequalities for the functions in these classes are also obtained.
Olusegun Awoyale, Timothy Oloyede Opoola
openaire   +1 more source

On certain classes of $p$-valent functions [PDF]

open access: yesČasopis pro pěstování matematiky, 1988
Let \(K^*_{n+p-1}\) be a class of p-valent functions of the form \(f(z)=z^ p-\sum^{\infty}_{k=1}a_{p+k}z^{p+k},\) \(a_{p+k}\geq 0\), for \(k=1,2,...\), and such that \(Re(D^{n+p}f(z)/D^{n+p-1}f(z))>\) for \(| z|
openaire   +2 more sources

On the starlikeness of p-valent functions

open access: yesTURKISH JOURNAL OF MATHEMATICS, 2019
Summary: For an analytic function in open unit disk \(\mathbb{D}\), we consider the \(p\)-valent analogue of the Noshiro-Warschawski univalence condition. We apply the Fejér-Riesz inequality to establish some sufficient conditions for functions to be \(p\)-valent or to be a Bazilevič function or to be in some other classes.
Mamoru NUNOKAWA   +3 more
openaire   +1 more source

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