Results 21 to 30 of about 3,606 (203)

NEIGHBOURHOODS OF UNIVALENT FUNCTIONS [PDF]

open access: yesBulletin of the Australian Mathematical Society, 2010
AbstractThe main result shows that a small perturbation of a univalent function is again a univalent function, hence a univalent function has a neighbourhood consisting entirely of univalent functions. For the particular choice of a linear function in the hypothesis of the main theorem, we obtain a corollary which is equivalent to the classical Noshiro–
Pascu, Mihai N., Pascu, Nicolae R.
openaire   +2 more sources

Univalence Criteria for Two Integral Operators

open access: yesAbstract and Applied Analysis, 2012
We study the univalence conditions for two integral operators to be univalent in the open unit disk. Many known univalence conditions are written to prove our main results.
Laura Filofteia Stanciu, Daniel Breaz
doaj   +1 more source

A Connection between Basic Univalence Criteria

open access: yesAbstract and Applied Analysis, 2013
We obtain a sufficient condition for the analyticity and the univalence of a class of functions defined by an integral operator. The well-known univalence criteria of Alexander, Noshiro-Warschawski, Nehari, Goluzin, Ozaki-Nunokawa, Becker, and ...
Horiana Tudor
doaj   +1 more source

A univalency criterion.

open access: yesMichigan Mathematical Journal, 1985
Let f be meromorphic and locally univalent in the upper half plane U with Schwarzian derivative S(f,z). Suppose that \(| 2(Im z)S(f,z)-c(c- 1)| \leq k| c|\) for all \(z\in U\).
Anderson, J. M., Hinkkanen, A.
openaire   +3 more sources

On An Integral Operator

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2014
In this paper we define a general integral operator for analytic functions in the open unit disk and we determine some conditions for univalence of this integral operator.
Pescar Virgil, Breaz Daniel
doaj   +1 more source

On Univalent Polynomials [PDF]

open access: yesProceedings of the American Mathematical Society, 1976
We define V n ⊆ C n − 1 {V_n} \subseteq {{\mathbf {C}}^{n - 1}} to be the set of ( n −
openaire   +1 more source

Displayed Categories [PDF]

open access: yes, 2019
We introduce and develop the notion of *displayed categories*. A displayed category over a category C is equivalent to "a category D and functor F : D --> C", but instead of having a single collection of "objects of D" with a map to the objects of C ...
Ahrens, Benedikt   +1 more
core   +3 more sources

On Becker's univalence criterion [PDF]

open access: yes, 2017
We study locally univalent functions $f$ analytic in the unit disc $\mathbb{D}$ of the complex plane such that $|{f"(z)/f'(z)}|(1-|z|^2)\leq 1+C(1-|z|)$ holds for all $z\in\mathbb{D}$, for some ...
Huusko, Juha-Matti, Vesikko, Toni
core   +2 more sources

Univalent Foundations and the UniMath Library [PDF]

open access: yes, 2018
We give a concise presentation of the Univalent Foundations of mathematics outlining the main ideas, followed by a discussion of the UniMath library of formalized mathematics implementing the ideas of the Univalent Foundations (section 1), and the ...
A Borel   +13 more
core   +3 more sources

Schwarzian Derivatives and Uniform Local Univalence

open access: yes, 2007
Quantitative estimates are obtained for the (finite) valence of functions analytic in the unit disk with Schwarzian derivative that is bounded or of slow growth. A harmonic mapping is shown to be uniformly locally univalent with respect to the hyperbolic
Chuaqui, Martin   +2 more
core   +2 more sources

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