Results 21 to 30 of about 273 (33)

On polynomial expansion of multivalent functions

International Journal of Mathematics and Mathematical Sciences, Volume 14, Issue 3, Page 443-446, 1991., 1991
Coefficient bounds for mean p‐valent functions, whose expansion in an ellipse has a Jacobi polynomial series, are given in this paper.
M. M. Elhosh
wiley   +1 more source

Sufficient conditions for spiral‐likeness

International Journal of Mathematics and Mathematical Sciences, Volume 12, Issue 4, Page 641-644, 1989., 1989
Coefflcient conditions sufficient for splral‐likenss are found by convolution methods. The order of starlikeness for such functions is also determined.
H. Silverman
wiley   +1 more source

Some classes of alpha‐quasi‐convex functions

International Journal of Mathematics and Mathematical Sciences, Volume 11, Issue 3, Page 497-501, 1988., 1986
Let C[C, D], −1 ≤ D < C ≤ 1 denote the class of functions g, g(0) = 0, g′(0) = 1, analytic in the unit disk E such that is subordinate to , z ∈ E. We investigate some classes of Alpha‐Quasi‐Convex Functions f, with f(0) = f′(0) − 1 = 0 for which there exists a g ∈ C[C, D] such that is subordinate to , −1 ≤ B < A ≤ 1.
Khalida Inayat Noor
wiley   +1 more source

Subclasses of close‐to‐convex functions

International Journal of Mathematics and Mathematical Sciences, Volume 6, Issue 3, Page 449-458, 1983., 1983
Let 𝒦[C, D], −1 ≤ D < C ≤ 1, denote the class of functions g(z), g(0) = g′(0) − 1 = 0, analytic in the unit disk U = {z : |z| < 1} such that 1 + (zg″(z)/g′(z)) is subordinate to (1 + Cz)/(1 + Dz), z ϵ U. We investigate the subclasses of close‐to‐convex functions f(z), f(0) = f′(0) − 1 = 0, for which there exists g ϵ 𝒦[C, D] such that f′/g′ is ...
E. M. Silvia
wiley   +1 more source

An equation for complex fractional diffusion created by the Struve function with a T-symmetric univalent solution

Demonstratio Mathematica
A TT-symmetric univalent function is a complex valued function that is conformally mapping the unit disk onto itself and satisfies the symmetry condition ϕ[T](ζ)=[ϕ(ζT)]1∕T{\phi }^{\left[T]}\left(\zeta )={\left[\phi \left({\zeta }^{T})]}^{1/T} for all ζ ...
Ibrahim Rabha W., Baleanu Dumitru
doaj   +1 more source

A note on a class of $p$-valent starlike functions of order beta [PDF]

, 2014
In this paper we obtain sharp coefficient bounds for certain $p$-valent starlike functions of order $\beta$, $0\le ...
Lal Sharma, Navneet, Swadesh Sahoo
core  

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  

Lipschitz spaces and harmonic mappings

, 2009
In \cite{kamz} the author proved that every quasiconformal harmonic mapping between two Jordan domains with $C^{1,\alpha ...
Kalaj, David
core   +1 more source

On logarithmic coefficients of some close-to-convex functions

, 2016
The logarithmic coefficients $\gamma_n$ of an analytic and univalent function $f$ in the unit disk $\mathbb{D}=\{z\in\mathbb{C}:|z|
Ali, Md Firoz, Vasudevarao, A.
core   +1 more source

Novel insights into the biomarkers and therapies for primary central nervous system lymphoma. [PDF]

Ther Adv Med Oncol, 2022
Zhai Y, Zhou X, Wang X.
europepmc   +1 more source