Results 31 to 40 of about 1,333 (181)

On radii of starlikeness and convexity for convolutions of starlike functions [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1995
In this paper, we obtain the radiuses of univalence, starlikeness and convexity for convolutions of starlike functions.
Yi Ling, Shusen Ding
openaire   +2 more sources

Subclasses of close-to-convex functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1983
Let 𝒦[C,D], −1 ...
E. M. Silvia
doaj   +1 more source

On Janowski Starlike Functions [PDF]

open access: yesJournal of Inequalities and Applications, 2007
Applying the fractional calculus to analytic functions \(f(z)\) defined on the open unit disc \(U\) with \(f(0)=0\) and \(f^\prime(0)=1\) [cf. \textit{W. Janowski}, Bull. Acad. Pol. Sci., Sér. Sci. Math. Astron. Phys. 21, 17--25 (1973; Zbl 0252.30021)], the authors introduce a new fractional operator \(D^\lambda f(z)\) and define a subclass of the ...
Çağlar, Mert   +4 more
openaire   +6 more sources

A New Measure of Quantum Starlike Functions Connected with Julia Functions

open access: yesJournal of Function Spaces, 2022
In a complex domain, the investigation of the quantum differential subordinations for starlike functions is newly considered by few research studies. In this note, we arrange a set of necessary conditions utilizing the concept of the quantum differential
Samir B. Hadid   +2 more
doaj   +1 more source

Laplacian spectral determination of path-friendship graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2021
A graph G is said to be determined by the spectrum of its Laplacian matrix (DLS) if every graph with the same spectrum is isomorphic to G. In some recent papers it is proved that the friendship graphs and starlike trees are DLS. If a friendship graph and
Mohammad Reza Oboudi   +3 more
doaj   +1 more source

Palindromes in starlike trees [PDF]

open access: yesCoRR, 2018
5 ...
Glen, A., Simpson, J., Smyth, W.F.
openaire   +3 more sources

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

Convex and starlike criteria

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1999
We investigate an expression involving the quotient of the analytic representations of convex and starlike functions. Sufficient conditions are found for functions to be starlike of a positive order and convex.
Herb Silverman
doaj   +1 more source

Fourth Hankel Determinant for a Subclass of Starlike Functions Based on Modified Sigmoid

open access: yesJournal of Function Spaces, 2021
In our present investigation, we obtain the improved third-order Hankel determinant for a class of starlike functions connected with modified sigmoid functions.
Wali Khan Mashwani   +6 more
doaj   +1 more source

Sandwich Theories for Pascal Distribution–Related Univalent Functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2026, Issue 1, 2026.
This paper investigates differential subordination and superordination for univalent functions, emphasizing operators derived from the Pascal distribution. Motivated by the limited existing results using this operator, the study establishes new sandwich‐type theorems.
Fatma Z. El-Emam   +2 more
wiley   +1 more source

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