Results 21 to 30 of about 5,150,775 (195)
Convex Sets and Subharmonicity of the Inverse Norm Function
Abstract and Applied Analysis, 2022 In this paper, we show that in order for a proper compact subset K of plane ℝ2 to be convex, it is necessary and sufficient that inverse norm function be subharmonic.
Mohammad Taghi Heydari
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A generalized frequency detuning method for multidegree-of-freedom oscillators with nonlinear stiffness [PDF]
, 2013 In this paper, we derive a frequency detuning method for multi-degree-of-freedom oscillators with nonlinear stiffness. This approach includes a matrix of detuning parameters, which are used to model the amplitude dependent variation in resonant ...
Neild, S.A +3 more
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ON ENTIRE FUNCTIONS WITH GIVEN ASYMPTOTIC BEHAVIOR
Проблемы анализа, 2018 We study approximation of subharmonic functions on the complex plane by logarithms of moduli of entire functions. In the theory of series of exponentials these entire functions are the main tool.
Isaev K . P .
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Asymptotics of $\delta$-subharmonic functions of finite order
Математичні Студії, 2020 For $\delta$-subharmonic in $\mathbb{R}^m$, $m\geq2$, function $u=u_1-u_2$ of finite positive order we found the asymptotical representation of the form \[ u(x)=-I(x,u_1)+I(x,u_2) +O\left(V(|x|)\right),\ x\to\infty, \] where $I(x,u_i)=\int\limits_{|a-x ...
M.V. Zabolotskyi
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1/3 SUBHARMONIC RESPONSE OF DUFFING OSCILLATOR UNDER PERIODIC AND RANDOM EXCITATIONS
Advanced Engineering Research, 2014 The subharmonic response of one third order of Duffing oscillator under harmonic and random excitations is investigated for the first time by a technique combining the stochastic averaging method, the equivalent linearization method, and the technique of
N. D. Anh +3 more
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Bifurcation curves of subharmonic solutions
, 2019 We revisit a problem considered by Chow and Hale on the existence of subharmonic solutions for perturbed systems. In the analytic setting, under more general (weaker) conditions, we prove their results on the existence of bifurcation curves from the ...
Bartuccelli, MV +2 more
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SUBHARMONIC AND STRONGLY SUBHARMONIC FUNCTIONS
, 2022 "Science and innovation" international scientific journal.
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Approximately Subharmonic Functions [PDF]
Proceedings of the American Mathematical Society, 1952 for 0
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Integrals of subharmonic functions and their differences with weight over small sets on a ray
Математичні Студії, 2020 Let $E$ be a measurable subset in a segment $[0,r]$ in the positive part of the real axis in the complex plane, and $U=u-v$ be the difference of subharmonic functions $u\not\equiv -\infty$ and $v\not\equiv -\infty$ on the complex plane.
B.N. Khabibullin
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Омский научный вестник, 2023 The article considers the dynamics of a nonlinear mechanical system under the action of a kinematic perturbation on it. The object's vibration isolation system is described by a rigid cubic power characteristic and is based on compensation of external ...
V. A. Nekhaev +3 more
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