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 作者：Mamoru Nunokawa , Janusz Sokół 来源：[J].Journal of Inequalities and Applications(IF 0.822), 2017, Vol.2017 (1)Springer 摘要：Let f be an analytic function in the unit disc $$|z|<1$$ on the complex plane $$\mathbb {C}$$ . This paper is devoted to obtaining the correspondence between $$f(z)$$ and $$zf'(z)$$ at the point w , $$0<|w|=R< 1$$ , such that $$|f(w)|=\min \{|f(z)|: f(z)\in\partial f(|z|\leq R) \...  作者：Ji A Kim , Nak Eun Cho 来源：[J].Advances in Difference Equations(IF 0.76), 2013, Vol.2013 (1), pp.1-11Springer 摘要：Abstract(#br)The purpose of the present paper is to investigate various mapping and inclusion properties involving subclasses of analytic and univalent functions for a linear operator defined by means of Hadamard product (or convolution) with the Gaussian hypergeometric function....  作者：BAPPADITYA BHOWMIK 来源：[J].Proceedings - Mathematical Sciences(IF 0.191), 2015, Vol.125 (4), pp.511-519Springer 摘要：Abstract(#br)In this article, we consider a family \(\mathcal {C}(A, B)$$ of analytic and locally univalent functions on the open unit disc $$\mathbb {D}=\{z :|z|<1\}$$ in the complex plane that properly contains the well-known Janowski class of convex univalent functions. In thi...
 作者：Yong Chan Kim , Jae Ho Choi 来源：[J].Journal of Inequalities and Applications(IF 0.822), 2013, Vol.2013 (1), pp.1-6Springer 摘要：... We also consider the Noshiro-Warschawski theorem in the Banach algebra of continuous functions.(#br) MSC: 30C45, 46J10.
 作者：Pavel Gumenyuk 来源：[J].Constructive Approximation(IF 1.068), 2017, Vol.46 (3), pp.435-458Springer
 作者：Marjono , Janusz Sokół , Derek K. Thomas 来源：[J].Mediterranean Journal of Mathematics(IF 0.641), 2017, Vol.14 (4)Springer 摘要：Let f be analytic in $${\mathbb D}=\{z:|z|<1\}$$ , with $$f(z)=z+\sum _{n=2}^{\infty }a_{n}z^{n}$$ and belong to the set of Bazilevič functions of logarithmic growth $${\mathcal B}_{1}(\alpha )$$ defined for $$\alpha \ge 0$$ by $$\mathfrak {Re} \big \{ f'(z)\big (\frac{f(z)}{z}...  作者：Khalida Inayat Noor , Janusz Sokół , Qazi Zahoor Ahmad 来源：[J].Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas(IF 0.733), 2017, Vol.111 (4), pp.947-958Springer 摘要：In this paper, we define new subclasses of meromorphic univalent functions with respect to symmetric points. The convolution properties and coefficient bounds for these classes are studied.  作者：Ilgiz R Kayumov , Saminathan Ponnusamy 来源：[J].Computational Methods and Function Theory(IF 0.5), 2017, Vol.17 (4), pp.679-688Springer 摘要：We determine the Bohr radius for the class of odd functions f satisfying \(|f(z)|\le 1$$ for all $$|z|<1$$ , solving the recent problem of Ali et al. (J Math Anal Appl 449(1):154–167, 2017 ). In fact, we solve this problem in a more general setting. Then we discuss Bohr’s r...
 作者：Samuel L. Krushkal 来源：[J].Complex Analysis and Operator Theory(IF 0.404), 2017, Vol.11 (7), pp.1491-1501Springer 摘要：... We provide a general distortion theorem for univalent functions in arbitrary quasiconformal disks with k -quasiconformal extensions to $$\mathbb {C}$$ giving a universal power bound. Generically, this power cannot be strengthened.
 作者：Thomas H. MacGregor , Michael P. Sterner 来源：[J].Complex Variables and Elliptic Equations(IF 0.5), 2018, Vol.63 (11), pp.1529-1538Taylor & Francis 摘要：ABSTRACT(#br)Each function which is analytic and univalent in the open unit disk in the complex plane has a tangential boundary limit almost everywhere with an approach having exponential contact. In this paper, we obtain corresponding results for the fractional derivatives ...