Results 51 to 60 of about 106 (104)
On some classes of holomorphic functions whose derivatives have positive real part
, 2022 In this paper we discuss about normalized holomorphic functions whose derivatives have positive real part. For this class of functions, denoted R, we present a general distortion result (some upper bounds for the modulus of the k- th derivative of a ...
GRIGORICIUC, Eduard Ștefan
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On a subclass of multivalent functions defined by generalized multiplier transformation
Open MathematicsThe objective of this study is to establish a novel category of multivalent analytic functions by utilizing generalized multiplier transformations. The subclass is further examined for coefficient estimations, growth and distortion theorems, extreme ...
Alharayzeh Ma’moun I. Y.
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, 2020 In this paper we examine the closure properties of the class VH(F ; γ) under the generalized Bernardi-Libera-Livingston integral operator Lc(f ), (c > −1) which is defined by Lc(f ) = Lc(h) + Lc(g), f = h + g, h and g are analytic functions, where Lc ...
SĂLĂGEAN, Grigore Ștefan +1 more
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Demonstratio MathematicaA challenging part of studying geometric function theory is figuring out the sharp boundaries for coefficient-related problems that crop up in the Taylor-Maclaurin series of univalent functions.
Murugusundaramoorthy Gangadharan +3 more
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Estimates of logarithmic coefficients of univalent functions
, 1992 International Journal of Mathematics and Mathematical Sciences, Volume 16, Issue 2, Page 311-318, 1993.
Stephen M. Zemyan
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Demonstratio MathematicaIn this article, we determine coefficient estimates and study the Fekete-Szegö problem for classes Λn(b){\Lambda }_{n}\left(b) and Λnc(b){\Lambda }_{n}^{c}\left(b), where bb is a nonzero complex order.
Aron Mihai
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On the coefficient estimates for a subclass of m-fold symmetric bi-univalent functions
In this work, we introduce and investigate a subclass of analytic and bi-univalent functions when both f and f-1 are m-fold symmetric in the open unit disk U.
HOSSEINI, Seyed Hadi +3 more
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Properties of a class of multivalent functions starlike with respect to symmetric and conjugate points 1 [PDF]
, 2020 Let S be the class of functions analytic and multivalent in the open unit disc given by a p+n z p+n and a n ∈ C. In this paper we have studied three subclasses consisting of analytic functions with negative coefficients and starlike with respect to ...
S M Khairnar, S M Rajas
core
Pascu-type p-valent functions associated with the convolution structure
, 2015 Making use of convolution structure, we introduce a new class of pvalent functions. Among the results presented in this paper include the coecient bounds, distortion inequalities, extreme points and integral means inequalities for this generalized class ...
SÜMER EKER, Sevtap, ÖNER, Birgül
core
Some properties of a class of holomorphic functions associated with tangent function
Demonstratio MathematicaIn this study, we define new class of holomorphic functions associated with tangent function. Furthermore, we examine the differential subordination implementation results related to Janowski and tangent functions. Also, we investigate some extreme point
Khan Muhammad Ghaffar +5 more
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