排序方式: 共有11条查询结果,搜索用时 15 毫秒
1.
《复变函数与椭圆型方程》2012,57(14):1087-1093
In this article we shall extend the nonlinear superordination [image omitted] to the superordination of the form [image omitted] 相似文献
2.
We obtain subordination, superordination and sandwich-preserving new theorems for certain integral operators defined on the space of normalized analytic functions in the open unit disk. The sandwich-type theorem for these integral operators is also derived, and the results generalize some recently ones. 相似文献
3.
Let q1 and q2 belong to a certain class of normalized analytic univalent functions in the open unit disk of the complex plane. Sufficient conditions are obtained for normalized analytic functions p to satisfy the double subordination chain q1(z)?p(z)?q2(z). The differential sandwich-type result obtained is applied to normalized univalent functions and to Φ-like functions. 相似文献
4.
For α 0, λ 0 and β,η∈R, we consider the M(α,λ)_b of normalized analyticα—λ convex functions defined in the open unit disc U. In this paper we investigate the class M(α, λ,β,η)_b,with f_b := z/(1-z~n)~b being Koebe type. By making use of Jack's Lemma as well as several differential and other inequalities, the authors derive sufficient conditions for starlikeness of the class M(α, λ, β, η)_b of n-fold symmetric analytic functions of Koebe type. Relevant connections of the results presented here with those given in earlier works are also indicated. 相似文献
5.
Nak Eun Cho 《数学物理学报(B辑英文版)》2012,32(3):929-941
The purpose of this article is to obtain some subordination and superordination preserving properties of meromorphic multivalent functions in the punctured open unit disk associated with the Liu-Srivas... 相似文献
6.
In the present paper, we obtain some subordination- and superordinatiompreserving properties of certain integral operators defined on the space of normalized analytic functions in the open unit disk. The sandwich-type theorems for these integral operators are also considered. 相似文献
7.
Nak Eun Cho 《Applied mathematics and computation》2010,217(2):918-1141
In the present paper, we investigate some subordination- and superordination-preserving properties for certain classes of analytic and multivalent functions in the open unit disk, which are associated with such multiplier transformations as the Srivastava-Attiya operator. Various sandwich-type theorems for functions belonging to these classes are also obtained. 相似文献
8.
Sanford S. Miller Petru T. Mocanu 《Journal of Mathematical Analysis and Applications》2007,329(1):327-335
Briot-Bouquet differential subordinations play a prominent role in the theory of differential subordinations. In this article we consider the dual problem of Briot-Bouquet differential superordinations. Let β and γ be complex numbers, and let Ω be any set in the complex plane C. The function p analytic in the unit disk U is said to be a solution of the Briot-Bouquet differential superordination if
9.
Strong differential subordination and superordination properties are determined for Phi-like functions in the open unit disk by investigating appropriate classes of admissible functions. New strong differential sandwich-type results are also obtained. 相似文献
10.
Double Subordination Preserving Properties for a New Generalized Srivastava-Attiya Integral Operator
The authors obtain subordination and superordination preserving properties for a new defined generalized operator involving the Srivastava-Attiya integral operator.Differential sandwich-type theorems f... 相似文献