Results 21 to 30 of about 11,578 (225)

On Quasi-inversions [PDF]

open access: yes, 2015
Given a bounded domain $D \subset {\mathbb R}^n$ strictly starlike with respect to $0 \in D\,,$ we define a quasi-inversion w.r.t. the boundary $\partial D \,.$ We show that the quasi-inversion is bi-Lipschitz w.r.t.
Kalaj, David   +2 more
core   +1 more source

Analytic Functions Related with Starlikeness [PDF]

open access: yesMathematical Problems in Engineering, 2021
The aim of present investigation is to study a new class of analytic function related with the Sokol-Nunokawa class. We derived relationships of this class with strongly starlike functions and obtained many interesting results.
Syed Ghoos Ali Shah   +5 more
openaire   +1 more source

Starlike and convexity properties of q-Bessel-Struve functions

open access: yesDemonstratio Mathematica, 2022
This paper introduces three different normalization associated with the second and third q-Bessel-Struve functions. We use Hadamard factorizations to determine the radii of starlike and convexity of these functions.
Oraby Karima M., Mansour Zeinab S. I.
doaj   +1 more source

A discontinuity in the low-mass initial mass function [PDF]

open access: yes, 2007
The origin of brown dwarfs (BDs) is still an unsolved mystery. While the standard model describes the formation of BDs and stars in a similar way recent data on the multiplicity properties of stars and BDs show them to have different binary distribution ...
Bate M. R.   +9 more
core   +1 more source

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

Spanning graphs of hypercubes: starlike and double starlike trees

open access: yesDiscrete Mathematics, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kobeissi, Mohamed, Mollard, Michel
openaire   +1 more source

Jakubowski starlike integral operators [PDF]

open access: yesJournal of the Australian Mathematical Society. Series A. Pure Mathematics and Statistics, 1984
AbstractLet S(m, M) be the set of functions regular and satisfying │zf′(z)/f(z) – m│< M in │z│ <1, where│m –│ <M;≦ m; and let S*(p) be the set of starlike functions of order p, 0≦ p <1. In this paper we obtain integral operators which map S(m, M) into S(mM) and S* (p) × S(mM) into S*(p).
Kumar, Vinod, Shukla, S. L.
openaire   +2 more sources

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

Radius of Starlikeness of Convex Combinations of Univalent Starlike Functions [PDF]

open access: yesProceedings of the American Mathematical Society, 1980
The radius of starlikeness of the convex combination \[ t f ( z ) + ( 1 − t ) g ( z ) , 0 > t > 1 , tf(z) + (1 - t)g(z),\quad 0 > t > 1, \] where f ( z
Hamilton, D. H., Tuan, P. D.
openaire   +1 more source

On certain classes of p-Valent functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1986
Let Vkλ(α,b,p) (k≥2, b≠0 is any complex number, 0 ...
M. K. Aouf
doaj   +1 more source

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