Results 51 to 60 of about 60,050 (165)
A Coefficient Problem for Univalent Functions Related to Two-Point Distortion Theorems
Rocky Mountain Journal of Mathematics, 2001 Let \(S\) be the class of univalent functions \(f(z)= z+ a_2z^2+ a_3z^3+\cdots\) on the unit disc \(D= \{z\in\mathbb{C}:|z|< 1\}\). Let \[ J_p(f)= \text{Re}(a_3+ \textstyle{{1\over 3}} (p-3) a^2_2)+ \textstyle{{1\over 3}} (p+1)|a_2|^2,\quad f\in S,\quad p\in \mathbb{R}.
Greiner, Richard, Roth, Oliver
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On a New Subclass of Univalent Harmonic Functions That Defined by Integral Operator
Journal of Kufa for Mathematics and Computer, 2017 In this paper, we investigate several properties of the harmonic class ( ) we discuss the coefficient inequality, the distortion bounds theorem, the closure theorem, convex combinations, Bernardi integral operator and integral convolution property.
Waggas Galib Atshan +1 more
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Numerical Simulation of Stretch Bending for L-section Aluminum Alloy Profile
Electronic Journal of Structural Engineering, 2018 High precision stretch bending of aluminum alloy profile is the key technology for making car’s frame body. A numerical simulation study on the displacement-controlled process for a typical kind of L-section aluminum alloy profile used in high-speed ...
Y. Liu +6 more
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Subclass of Multivalent Harmonic Functions with Missing Coefficients
International Journal of Mathematics and Mathematical Sciences, 2012 We have studied subclass of multivalent harmonic functions with missing coefficients in the open unit disc and obtained the basic properties such as coefficient characterization and distortion theorem, extreme points, and convolution.
R. M. El-Ashwah
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A New Subclass of Salagean-Type Harmonic Univalent Functions
Abstract and Applied Analysis, 2010 We define and investigate a new subclass of Salagean-type harmonic univalent functions. We obtain coefficient conditions, extreme points, distortion bounds, convolution, and convex combination for the above subclass of harmonic functions.
Khalifa Al-Shaqsi +2 more
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MathematicsIn this paper, we create a new subclass of convex functions given with tangent functions applying the combination of Babalola operators and Binomial series.
Sheza M. El-Deeb +1 more
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Projective Properties for Symmetrical Magnetic Lens by Using Exponential Model
Ibn Al-Haitham Journal for Pure and Applied Sciences, 2017 A computational investigation is carried out in the field of charged particle optics with the aid of the numerical analysis methods. The work is concerned with the design of symmetrical double pole piece magnetic lens.
I. A. Mohammed
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Results on multivalent Bessel functions associated with a new integral operator
Partial Differential Equations in Applied MathematicsMany authors have considered several special functions and their applications in geometric function theory using different operators. Not much was known in literature on analytic functions associated with Bessel function using integral operator ...
Esther O. Davids +2 more
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MULTIVALENT α - CONVEX HARMONIC MAPPINGS
Проблемы анализа, 2002 In this paper we give coefficient conditions for complex-valued harmonic functions that are ultivalent, sense-preserving and α-convex. We determine the extreme points, distortion and covering theorems for these mappings.
GANCZAR A.
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Estimations of Fourier Coefficients For Controlled Distortion of a Periodic Function
There is a class of physical filtration processes where the input is adequately modeled by a continuous periodic function f (x) of bounded variation over its period, and the output depends only on certain harmonics of the Fourier expansion of f (x) in the orthogonal basis of trigonometric functions. One example is the discrete spectrum sound generation
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