Results 121 to 130 of about 11,384 (303)

Asymptotic tracts of locally univalent functions

, 2002
Several results are proved which are related to an old problem of G.R. MacLane, namely, whether functions in the class $\mathcal{A}$ that are locally univalent can have arc tracts.
Barth, Karl F., Rippon, Philip J.
core   +1 more source

Controlling the Guanidinium Cation Rotation by Cation–π Interactions

Angewandte Chemie International Edition, EarlyView.
A lanthanide π‐container has been employed to trap a guanidinium cation inside the aromatic cavity by cation–π interactions. X‐ray crystallography and solid‐state nuclear magnetic resonance (NMR) spectroscopy at fast magic‐angle spinning (MAS) frequencies have been utilized to probe the underlying host–guest interactions.
Hannah Busch, Lennart Günzel, Ettore Bartalucci, Robert Schuster, Christian Zocher, Martin Börner, Chandan K. Das, Florian Taube, Björn Corzilius, Maria Fyta, Matthias Ernst, Berthold Kersting, Thomas Wiegand   +12 more
wiley   +1 more source

Subclass of harmonic starlike functions associated with salagean derivative

Le Matematiche, 2014
The purpose of the present paper is to establish some results involving coefficient conditions, distortion bounds, extreme points, convolution, and convex combinations for a new class of harmonic univalent functions in the open unit disc \ associated ...
H. E. Darwish, A. Y. Lashin, S. M. Soileh   +2 more
doaj  

Birth of the theory of univalent functions

, 1998
"Univalent" is the complex analyst's term for "one-to-one" functions. A univalent function has a non-vanishing derivative. Riemann Mapping Theorem stated in 1851 could not find some interesting applications until P.
Lam, Hwee Peng
core  

Certain classes of bi-univalent functions with bounded boundary variation

, 2017
In their pioneering work dated 2010 on the subject of bi-univalent functions, Srivastava et al. actually revived the study of the coefficient problems involving bi-univalent functions in recent years. Inspired by the pioneering work of Srivastava et Hi.,
ORHAN, Halit, Balaji, V. K., H. Orhan, N. Magesh, MAGESH, NANJUNDAN, V. K. Balaji   +5 more
core   +1 more source

Univalent Functions

, 1962
A function f(z) is said to be univalent in a region G if and only if f(z1) = f(s2 ) in G implies z1 = z2 whenever z1 and z2 are any two points in G. Another way of stating this is that a univalent function in G is characterized by the fact that it takes ...
Robinson, James A.
core  

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

Demonstratio 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

Certain subclass of alpha-convex bi-univalent functions defined using $q$-derivative operator

summary:The present investigation deals with a new subclass of alpha-convex bi-univalent functions in the unit disc $E=\left\rbrace z\colon \mid z \mid
Singh, Gurcharanjit, Singh, Gagandeep
core   +1 more source

A note on Hadamard products of univalent functions

, 1980
An example is constructed to show that a modified Hadamard product of two normalized univalent functions with real coefficients may not be univalent.
Daoud Bshouty
core   +1 more source

ON UNIVALENCE OF INTEGRAL OPERATORS

Communications Faculty Of Science University of Ankara Series A1Mathematics and Statistics, 2018
In this paper we consider functions of psi(lambda) and we define integral operators denoted by F-beta,F-lambda and G(beta,lambda) using by psi(lambda), then we proved sufficient conditions for univalence of these integral operators.
openaire   +4 more sources