Articles with "close convex" as a keyword



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Janowski type close-to-convex functions associated with conic regions

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Published in 2017 at "Journal of Inequalities and Applications"

DOI: 10.1186/s13660-017-1535-4

Abstract: The analytic functions, mapping the open unit disk onto petal and oval type regions, introduced by Noor and Malik (Comput. Math. Appl. 62:2209-2217, 2011), are considered to define and study their associated close-to-convex functions. This… read more here.

Keywords: convex functions; janowski type; functions associated; close convex ... See more keywords
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Successive coefficients of close-to-convex functions

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Published in 2020 at "Forum Mathematicum"

DOI: 10.1515/forum-2020-0092

Abstract: Abstract In this paper we discuss coefficient problems for functions in the class ???? 0 ⁢ ( k ) {{\mathcal{C}}_{0}(k)} . This family is a subset of ???? {{\mathcal{C}}} , the class of close-to-convex functions,… read more here.

Keywords: close convex; successive coefficients; coefficients close; convex functions ... See more keywords
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Fekete Szegö theorem for a close-to-convex error function

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Published in 2019 at "Mathematica Slovaca"

DOI: 10.1515/ms-2017-0231

Abstract: Abstract By motivating the result of Ramachandran et al. [Certain results on q-starlike and q-convex error functions, Math. Slovaca, 68(2) (2018), 361–368], in this present investigation we derive the classical Fekete Szegö theorem for a… read more here.

Keywords: error; convex error; szeg theorem; close convex ... See more keywords
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On Generalizations of the Close-to-Convex Functions Associated with q-Srivastava–Attiya Operator

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Published in 2023 at "Mathematics"

DOI: 10.3390/math11092022

Abstract: The study of the q-analogue of the classical results of geometric function theory is currently of great interest to scholars. In this article, we define generalized classes of close-to-convex functions and quasi-convex functions with the… read more here.

Keywords: operator; generalizations close; functions associated; associated srivastava ... See more keywords
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Coefficient Estimates for a Subclass of Meromorphic Multivalent q-Close-to-Convex Functions

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Published in 2021 at "Symmetry"

DOI: 10.3390/sym13101840

Abstract: By making use of the concept of basic (or q-) calculus, many subclasses of analytic and symmetric q-starlike functions have been defined and studied from different viewpoints and perspectives. In this article, we introduce a… read more here.

Keywords: close convex; meromorphic multivalent; multivalent close; convex functions ... See more keywords