On quasiconformal reflection. (Zur quasikonformen Spiegelung.)
On quasi-convex functions and related topics.
On quasi-Hadamard product of certain classes of analytic functions.
On Quasiregualr Mappings and Domains with a Complete Conformal Metric.
On quasiregular polynomial mappings
On quasi-starlike functions
On radii of convexity and starlikeness of some classes of analytic functions.
On radii of starlikeness and convexity for convolutions of starlike functions.
On ratios of certain analytic functions
On realizability of sign patterns by real polynomials
The classical Descartes’ rule of signs limits the number of positive roots of a real polynomial in one variable by the number of sign changes in the sequence of its coefficients. One can ask the question which pairs of nonnegative integers , chosen in accordance with this rule and with some other natural conditions, can be the pairs of numbers of positive and negative roots of a real polynomial with prescribed signs of the coefficients. The paper solves this problem for degree polynomials.
On Rolle's theorem for polynomials over the complex numbers.
On Ruscheweyh derivatives
On Sakaguchi functions.
On Sandwich Theorem of Analytic Functions Involving Integral Operator
2000 Mathematics Subject Classification: 30C45
On sandwich theorems for some classes of analytic functions.
On sandwich theorems for some subclasses of analytic functions involving extended multiplier transformations
On searching for roots of a polynomial in a circular annulus
On selfsimilar Jordan curves on the plane.
On semi-typically real functions
Suppose that A is the family of all functions that are analytic in the unit disk Δ and normalized by the condition [...] For a given A ⊂ A let us consider the following classes (subclasses of A): [...] and [...] where [...] and S consists of all univalent members of A.In this paper we investigate the case A = τ, where τ denotes the class of all semi-typically real functions, i.e. [...] We study relations between these classes. Furthermore, we find for them sets of variability of initial coeffcients,...
On Solutions of the Beltrami Equation (2)