Results 11 to 20 of about 111 (99)
On sandwich theorems for some subclasses defined by generalized hypergeometric functions [PDF]
, 2017 In this paper we derive some subordination and superordination results for certain normalized analytic functions in the open unit disc, which are acted upon by a class of generalized hypergeometric function Hq,s(α1).
EL-ASHWAH, Rabha Mohamed +2 more
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Schwarzian derivative and Janowski convexity [PDF]
, 2017 Sufficient conditions relating the Schwarzian derivative to the Janowski convexity of a normalized analytic function f are obtained. As a consequence, sufficient conditions are determined for the function f to be Janowski convex and convex of order α ...
BOHRA, Nisha, RAVICHANDRAN, V.
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Strong subordination and superordination with sandwich-type theorems using integral operators
, 2021 The notions of strong differential subordination and superordination have been studied recently by many authors. In the present paper, using these concepts, we obtain some preserving properties of certain nonlinear integral operator defined on the space ...
ARJOMANDINIA, Parviz, AGHALARY, Rasoul
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, 2022 In this paper, we survey recent results obtained by the authors on the preservations of the first elements of (g-) Loewner chains and the Bloch mappings by the Roper-Suffridge type extension operators, the Muir type extension opera- tors and the ...
HAMADA, Hidetaka +3 more
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Meromorphic close-to-convex functions satisfying a differential inequality
, 2020 In the present paper, we study the differential inequality ... where f ∈ Σ and notice that the members of class Σ which satisfy the above inequality are meromorphic close-to-convex.
BILLING, Sukhwinder Singh +1 more
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Admissible classes of analytic functions associated with generalized Struve functions [PDF]
, 2017 In the present paper, by considering suitable classes of admissible functions we investigate some strong differential subordination as well as superordination results for analytic functions associated with normalized form of the generalized Struve ...
BREAZ, Daniel, PANIGRAHI , Trailokya
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Professor GABRIELA KOHR – A life for research. In memoriam [PDF]
, 2022 We review the main contributions of Professor Gabriela Kohr in her studies in the Geometric function theory in several complex variables and complex Banach spaces with special emphasis on the theory of Loewner chains and the Loewner differential equation.
SĂLĂGEAN, Grigore Ștefan +1 more
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Coefficient estimates and subordination properties for certain classes of analytic functions of reciprocal order [PDF]
, 2018 In this work, we determine the coefficient bounds and subordination results for functions in certain subclasses of analytic functions of reciprocal order, which are introduced here by means of a Hadamard product of analytic functions.
FRASIN, Basem Aref, Al-HAWARY, Tariq
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The Nehari–Schwarz lemma and infinitesimal boundary rigidity of bounded holomorphic functions
, 2022 We survey a number of recent generalizations and sharpenings of Nehari’s extension of Schwarz’ lemma for holomorphic self–maps of the unit disk. In particular, we discuss the case of infinitely many critical points and its relation to the zero sets and ...
ROTH, Oliver
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On multivalent starlike functions
, 2019 We prove some new sufficient conditions for function to be p-valent, or p-valently starlike in the unit disc.
SOKÓŁ, Janusz, NUNOKAWA, Mamoru
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