Results 61 to 70 of about 10,269,497 (359)

Univalence criterion for meromorphic functions and Loewner chains

open access: yes, 2011
The object of the present paper is to obtain a more general condition for univalence of meromorphic functions in the U*. The significant relationships and relevance with other results are also given.
Becker   +13 more
core   +1 more source

Meromorphic univalent function with negative coefficient

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1994
Let Mn be the classes of regular functions f(z)=z−1+a0+a1z+… defined in the annulus ...
A. Dernek
doaj   +1 more source

Coefficient Bounds for Certain Subclasses of Bi-Univalent Function

open access: yes, 2013
We introduce two new subclasses of the function class Σ of bi-univalent functions defined in the open unit disc. Furthermore, we find estimates on the coefficients and for functions in these new subclasses.
G. Murugusundaramoorthy   +2 more
semanticscholar   +1 more source

Some results for the family of univalent functions related with Limaçon domain

open access: yesAIMS Mathematics, 2021
The investigation of univalent functions is one of the fundamental ideas of Geometric function theory (GFT). However, the class of these functions cannot be investigated as a whole for some particular kind of problems.
Afis Saliu   +3 more
semanticscholar   +1 more source

On Some Geometric Properties of Slice Regular Functions of a Quaternion Variable

open access: yes, 2014
The goal of this paper is to introduce and study some geometric properties of slice regular functions of quaternion variable like univalence, subordination, starlikeness, convexity and spirallikeness in the unit ball.
Cartan H   +11 more
core   +1 more source

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

open access: yesDemonstratio 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

An exact estimate of the third Hankel determinants for functions inverse to convex functions

open access: yesМатематичні Студії, 2023
Invesigation of bounds for Hankel determinat of analytic univalent functions is prominent intrest of many researcher from early twenth century to study geometric properties.
B. Rath, K. S. Kumar, D. V. Krishna
doaj   +1 more source

Univalence of Bessel functions [PDF]

open access: yesProceedings of the American Mathematical Society, 1960
In particular we shall first determine a radius of univalence for the normalized Bessel functions [J,(z) ]1Iv for values of v belonging to the region G defined by the inequalities (i v} >0, I arg v|
openaire   +1 more source

A class of univalent functions [PDF]

open access: yesHokkaido Mathematical Journal, 1998
Let \(A\) denote the class of normalized analytic functions in the open unit disc \(U\) of the complex plane. Let \(S^*(\beta)\) denote functions in \(A\) which are starlike of order \(\beta\) and \(S^*= S^*(0)\). In this paper, the author investigates conditions on \(f\in A\) so that \(f\in S^*(\beta)\).
openaire   +2 more sources

Updown categories: Generating functions and universal covers

open access: yes, 2012
A poset can be regarded as a category in which there is at most one morphism between objects, and such that at most one of Hom(c,c') and Hom(c',c) is nonempty for distinct objects c,c'.
Baez   +14 more
core   +1 more source

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