Results 11 to 20 of about 279,482 (318)
Hankel inequalities for bounded turning functions in the domain of cosine Hyperbolic function
AIMS Mathematics, 2023 In the present article, we define and investigate a new subfamily of holomorphic functions connected with the cosine hyperbolic function with bounded turning.
Muhammmad Ghaffar Khan +5 more
doaj +1 more source
Problems concerning sharp coefficient functionals of bounded turning functions
AIMS Mathematics, 2023 The work presented in this article has been motivated by the recent research going on the Hankel determinant bounds and their related consequences, as well as the techniques used previously by many different authors.
Muhammmad Ghaffar Khan +3 more
doaj +1 more source
A Conditional Symmetric Memristive System With Infinitely Many Chaotic Attractors
IEEE Access, 2020 A chaotic system with a hyperbolic function flux-controlled memristor is designed, which exhibits conditional symmetry and attractor growing. The newly introduced cosine function keeps the polarity balance when some of the variables get polarity inversed
Jiacheng Gu +4 more
doaj +1 more source
The exact solutions for the (3+1)-dimensional Boiti-Leon-Manna-Pempinelli equation
Results in Physics, 2021 In the paper, we study the Boiti-Leon-Manna-Pempinelli equation with (3 + 1) dimension. By using the modified hyperbolic tangent function method, we obtain more new exact solutions for the (3+1)-dimensional Boiti-Leon-Manna-Pempinelli equation, which ...
Xiaofang Duan, Junliang Lu
doaj +1 more source
Hyperbolically convex functions [PDF]
Annales Polonici Mathematici, 1994 A region \(\Omega\subset D= \{z\mid | z|< 1\}\) is called hyperbolically convex if for all \(a,b\subset \Omega\) the hyperbolic geodesic connecting \(a\) and \(b\) lies in \(\Omega\). A holomorphic function \(f: D\to D\) is called hyperbolically convex if it is univalent, \(f(D)\) is hyperbolically convex and \(f(0)= 0\), \(f'(0)> 0\).
Wancang Ma, David Minda
openaire +3 more sources
On green’s function of second darboux problem for hyperbolic equation
Вестник КазНУ. Серия математика, механика, информатика, 2022 A definition and justify a method for constructing the Green’s function of the second Darboux problem for a two-dimensional linear hyperbolic equation of the second order in a characteristic triangle is given.
B. Derbissaly
doaj +1 more source
Robust adaptive filtering algorithms based on (inverse)hyperbolic sine function.
PLoS ONE, 2021 Recently, adaptive filtering algorithms were designed using hyperbolic functions, such as hyperbolic cosine and tangent function. However, most of those algorithms have few parameters that need to be set, and the adaptive estimation accuracy and ...
Sihai Guan +3 more
doaj +1 more source
Fractal and Fractional, 2023 The Korteweg–de Vries (KDV) equation is one of the most well-known models in nonlinear physics, such as fluid physics, plasma, and ocean engineering. It is very important to obtain the exact solutions of this model in the process of studying these topics.
Guojiang Wu, Yong Guo
doaj +1 more source
Mathematics, 2023 The KPI equation is one of most well-known nonlinear evolution equations, which was first used to described two-dimensional shallow water wavs. Recently, it has found important applications in fluid mechanics, plasma ion acoustic waves, nonlinear optics,
Feiyun Pei, Guojiang Wu, Yong Guo
doaj +1 more source
Automatika, 2020 The main contribution of this paper is to formulate a robust-adaptive and stable state-space speed control strategy for DC motors. The linear-quadratic-integral (LQI) controller is utilized as the baseline controller for optimal speed-regulation ...
Omer Saleem +3 more
doaj +1 more source