Results 31 to 40 of about 10,536,036 (281)
Fractal and Fractional, 2023 This article extends the study of q-versions of analytic functions by introducing and studying the association of starlike functions with trigonometric cosine functions, both defined in their q-versions.
Yusra Taj +5 more
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On norm estimation for certain subclasses of analytic functions in geometric functions theory [PDF]
Journal of Mahani Mathematical Research, 2023 We investigate on some subclasses of analytic fuctions defined by subordination. Also, we give estimates of $\sup_{|z|
Hormoz Rahmatan
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Subclasses of Yamakawa-Type Bi-Starlike Functions Associated with Gegenbauer Polynomials
Axioms, 2022 In this paper, we introduce and investigate new subclasses (Yamakawa-type bi-starlike functions and another class of Lashin, both mentioned in the reference list) of bi-univalent functions defined in the open unit disk, which are associated with the ...
G. Murugusundaramoorthy, T. Bulboacă
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Starlike functions associated with an Epicycloid
Hacettepe Journal of Mathematics and Statistics, 2022 For a natural number $n\geq 2$, the function $\phi_{n\mathcal{L}}(z)=1+nz/(n+1)+z^n/(n+1)$ maps the open unit disk onto a domain bounded by an epicycloid with $(n-1)$ cusps.
S. Gandhi +3 more
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Proceedings of the American Mathematical Society, 1974 Let S ∗ [ α ] {\mathcal {S}^\ast }[\alpha ] denote the class of functions f ( z ) = z + ∑ n = 2 ∞
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A study of sharp coefficient bounds for a new subfamily of starlike functions
Journal of Inequalities and Applications, 2021 In this article, by employing the hyperbolic tangent function tanh z , a subfamily S tanh ∗ $\mathcal{S}_{\tanh }^{\ast }$ of starlike functions in the open unit disk D ⊂ C $\mathbb{D}\subset \mathbb{C}$ : D = { z : z ∈ C and | z | < 1 } $$\begin ...
Khalil Ullah +4 more
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On a subclass of starlike functions associated with a vertical strip domain
Journal of Inequalities and Applications, 2019 In this paper, we consider a subclass of starlike functions associated with a vertical strip domain. We obtain several results concerned with integral representations, convolutions, and coefficient inequalities for functions belonging to this class ...
Yong Sun +3 more
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Certain New Subclass of Multivalent Q-Starlike Functions Associated with Q-Symmetric Calculus
Fractal and Fractional, 2022 In our present investigation, we extend the idea of q-symmetric derivative operators to multivalent functions and then define a new subclass of multivalent q-starlike functions.
Mohammad Faisal Khan +2 more
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Certain Coefficient Problems for q-Starlike Functions Associated with q-Analogue of Sine Function
Symmetry, 2022 This study introduces a subclass Sqs* of starlike functions associated with the q-analogue of the sine function defined in symmetric unit disk. This article comprises the investigation of sharp coefficient bounds, and the upper bound of the third-order ...
Yusra Taj +5 more
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Starlike Meromorphic Functions [PDF]
Proceedings of the American Mathematical Society, 1972 In this paper we study meromorphic univalent functions which map the unit disk onto the exterior of a domain which is starlike with respect to some finite point different from the origin. We obtain bounds on the arc length, an integral representation, and bounds on the maximum modulus of starlike meromorphic functions.
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