Results 41 to 50 of about 404 (62)

A new family of multivalent functions defined by certain forms of the quantum integral operator

Demonstratio Mathematica
In this work, using the concepts of qq-calculus, we first define the qq-Jung-Kim-Srivastava and qq-Bernardi integral operators for multivalent functions. Then, we use these operators to establish the generalized integral operator ℬq,p−m−λf(z){{\mathcal{ {
Khan Ajmal, Al-shbeil Isra, Shatarah Amani, Alrayes Norah Mousa, Khan Shahid, ul Haq Wasim   +5 more
doaj   +1 more source

A note on de Branges' weights [PDF]

, 2005
We discuss the de Branges weight systems and give a counterexample uncovering ...
Grinshpan, Anatolii, Grinshpan, Arcadii Z.   +1 more
core  

A Certain Subclass of Multivalent Analytic Functions with Negative Coefficients for Operator on Hilbert Space [PDF]

, 2015
By making use of the operators on Hilbert space, we introduce and studya subclass Ak of multivalent analytic functions with negative coecients.
Wanas, A. K. (Abbas)
core  

Estimates of logarithmic coefficients of univalent functions

, 1992
International Journal of Mathematics and Mathematical Sciences, Volume 16, Issue 2, Page 311-318, 1993.
Stephen M. Zemyan
wiley   +1 more source

Coefficient estimates and Fekete-Szegö problem for some classes of univalent functions generalized to a complex order

Demonstratio Mathematica
In this article, we determine coefficient estimates and study the Fekete-Szegö problem for classes Λn(b){\Lambda }_{n}\left(b) and Λnc(b){\Lambda }_{n}^{c}\left(b), where bb is a nonzero complex order.
Aron Mihai
doaj   +1 more source

Diameter problems for univalent functions with quasiconformal extension

, 1992
International Journal of Mathematics and Mathematical Sciences, Volume 16, Issue 4, Page 679-686, 1993.
Paul Deiermann
wiley   +1 more source

Coefficient functionals for Sakaguchi-type-Starlike functions subordinated to the three-leaf function

Demonstratio Mathematica
A challenging part of studying geometric function theory is figuring out the sharp boundaries for coefficient-related problems that crop up in the Taylor-Maclaurin series of univalent functions.
Murugusundaramoorthy Gangadharan, Lupas Alina Alb, Alburaikan Alhanouf, El-Deeb Sheza M.   +3 more
doaj   +1 more source

On a subclass of multivalent functions defined by generalized multiplier transformation

Open Mathematics
The objective of this study is to establish a novel category of multivalent analytic functions by utilizing generalized multiplier transformations. The subclass is further examined for coefficient estimations, growth and distortion theorems, extreme ...
Alharayzeh Ma’moun I. Y.
doaj   +1 more source

Estimation of deviation angle for axial-flow compressor blade sections using inviscid-flow solutions [PDF]

Development of a method of estimating deviation angles by analytical procedures was begun. Solutions for inviscid, irrotational flow in the blade-to-blade plane were obtained with a finite-difference calculation method.
Miller, M. J.
core   +1 more source

Some properties of a class of holomorphic functions associated with tangent function

Demonstratio Mathematica
In this study, we define new class of holomorphic functions associated with tangent function. Furthermore, we examine the differential subordination implementation results related to Janowski and tangent functions. Also, we investigate some extreme point
Khan Muhammad Ghaffar, Mashwani Wali Khan, Salleh Zabidin, Tchier Fairouz, Khan Bilal, Malik Sarfraz Nawaz   +5 more
doaj   +1 more source