Results 31 to 40 of about 6,249 (191)

Bounds for the Second Hankel Determinant of Certain Univalent Functions

open access: yes, 2013
The estimates for the second Hankel determinant a_2a_4-a_3^2 of analytic function f(z)=z+a_2 z^2+a_3 z^3+...b for which either zf'(z)/f(z) or 1+zf"(z)/f'(z) is subordinate to certain analytic function are investigated.
Keong, Lee See   +2 more
core   +1 more source

Slice Starlike Functions Over Quaternions [PDF]

open access: yesThe Journal of Geometric Analysis, 2018
25 ...
Xu, Zhenghua, Ren, Guangbin
openaire   +3 more sources

Further Geometric Properties of the Barnes–Mittag-Leffler Function

open access: yesAxioms, 2023
In this paper, we find sufficient conditions to be imposed on the parameters of a class of functions related to the Barnes–Mittag-Leffler function that allow us to conclude that it possesses certain geometric properties (such as starlikeness, uniformly ...
Abdulaziz Alenazi, Khaled Mehrez
doaj   +1 more source

A Subclass of Analytic Functions Related to k-Uniformly Convex and Starlike Functions

open access: yesJournal of Function Spaces, 2017
We investigate some subclasses of k-uniformly convex and k-uniformly starlike functions in open unit disc, which is generalization of class of convex and starlike functions.
Saqib Hussain   +3 more
doaj   +1 more source

Bohr Radius Problems for Some Classes of Analytic Functions Using Quantum Calculus Approach

open access: yesMathematics, 2020
The main purpose of this investigation is to use quantum calculus approach and obtain the Bohr radius for the class of q-starlike (q-convex) functions of order α . The Bohr radius is also determined for a generalized class of q-Janowski starlike and
Om Ahuja, Swati Anand, Naveen Kumar Jain
doaj   +1 more source

Multivalent Harmonic Uniformly Starlike Functions [PDF]

open access: yesKyungpook mathematical journal, 2009
Summary: We investigate a family of generalized complex-valued harmonic functions that are multivalent, sense-preserving, and which are associated with \(k\)-uniformly harmonic functions in the unit disk. The obtained results include a number of known and new results as special cases.
Ahuja, Om   +2 more
openaire   +2 more sources

A generalization of starlike functions of order alpha [PDF]

open access: yes, 2015
For every $q\in(0,1)$ and $0\le ...
Agrawal, Sarita, Sahoo, Swadesh K.
core  

Radii of Starlikeness Associated with the Lemniscate of Bernoulli and the Left-Half Plane

open access: yes, 2011
A normalized analytic function f defined on the open unit disk in the complex plane is in the class SL if zf'(z)/f(z) lies in the region bounded by the right-half of the lemniscate of Bernoulli given by |w^2 - 1| < 1. In the present investigation, the SL-
Ali, Rosihan M.   +2 more
core   +1 more source

Droplet friction on superhydrophobic surfaces

open access: yesDroplet, Volume 5, Issue 2, April 2026.
By developing an experimental setup that simultaneously measures the friction force, macroscopic shape profile, and the macro‐ and microscopic contact line dynamics of a laterally sliding droplet, this study establishes an analytical model that predicts droplet friction on pillared superhydrophobic surfaces relying only on surface geometrical ...
Youhua Jiang, Chuanqi Wei
wiley   +1 more source

A subclass of strongly starlike functions [PDF]

open access: yesریاضی و جامعه
Let's denote $\mathcal{S}^{\ast}(f_c)$ as a family of analytic functions $f(z)=z+a_2z^2+a_3z^3+\cdots$ in the open unit disk $\mathbb{D}$ that satisfy the following relation for $c\in (0,1)$:$$\frac{zf'(z)}{f(z)}\prec f_c(z)=\frac{1}{\sqrt{1-cz}}, \quad ...
Vali Soltani Masih
doaj   +1 more source

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