Results 1 to 10 of about 1,531 (218)

Subharmonic functions in scattering theory [PDF]

open access: yesComptes Rendus. Mathématique, 2021
We present a method that uses the properties of subharmonic functions to control spatial asymptotics of Green’s kernel of multidimensional Schrödinger operator with rough potential.
Denisov, Sergey A.
doaj   +2 more sources

Bi-Lipschitz Mappings and Quasinearly Subharmonic Functions [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2010
After considering a variant of the generalized mean value inequality of quasinearly subharmonic functions, we consider certain invariance properties of quasinearly subharmonic functions.
Oleksiy Dovgoshey, Juhani Riihentaus
doaj   +2 more sources

Entanglement produced by pairs of superposed two-mode coherent and subharmonic cavity light beams [PDF]

open access: yesScientific Reports
We examined a two-mode coherent and subharmonic light beam within a cavity that is coupled to a two-mode vacuum reservoir through a single port mirror. Utilizing the solutions of the quantum Langevin equations, we developed Q-functions for the two-mode ...
Menwuyelet Melaku, Deribe Hirpo
doaj   +2 more sources

Subharmonic envelopes for functions on domains

open access: yesВестник Самарского университета: Естественнонаучная серия, 2023
One of the most common problems in various fields of real and complex analysis is the questions of the existence and construction for a given function of an envelope from below or from above of a function from a special class H. We consider a case when H
Bulat N. Khabibullin
doaj   +2 more sources

Quasi-Nearly Subharmonicity and Separately Quasi-Nearly Subharmonic Functions [PDF]

open access: yesJournal of Inequalities and Applications, 2008
Wiegerinck has shown that a separately subharmonic function need not be subharmonic. Improving previous results of Lelong, Avanissian, Arsove, and of us, Armitage and Gardiner gave an almost sharp integrability condition which ensures a separately ...
Juhani Riihentaus
doaj   +3 more sources

Multimodal Resonances of a Rectangular Planar Dielectric Elastomer Actuator and Its Application in a Robot with Soft Bristles [PDF]

open access: yesBiomimetics
Inspired by the fact that flying insects improve their power conversion efficiency through resonance, many soft robots driven by dielectric elastomer actuators (DEAs) have achieved optimal performance via first-order modal resonance.
Yangyang Du   +4 more
doaj   +2 more sources

α-Subharmonic Functions

open access: yesСовременная математика: Фундаментальные направления, 2021
In this paper, we study the class of α-subharmonic functions. A number of important properties of α-subharmonic functions are proved, and an equivalent, more convenient definition of α-subharmonicity is given.
B. I. Abdullaev   +2 more
doaj   +1 more source

ON ENTIRE FUNCTIONS WITH GIVEN ASYMPTOTIC BEHAVIOR

open access: yesПроблемы 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 .
doaj   +1 more source

Fejér-Type Inequalities for Some Classes of Differentiable Functions

open access: yesMathematics, 2023
We let υ be a convex function on an interval [ι1,ι2]⊂R. If ζ∈C([ι1,ι2]), ζ≥0 and ζ is symmetric with respect to ι1+ι22, then υ12∑j=12ιj∫ι1ι2ζ(s)ds≤∫ι1ι2υ(s)ζ(s)ds≤12∑j=12υ(ιj)∫ι1ι2ζ(s)ds.
Bessem Samet
doaj   +1 more source

Semi-numerical analysis of a two-stage series composite planetary transmission considering incremental harmonic balance and multi-scale perturbation methods [PDF]

open access: yesMechanical Sciences, 2021
This study conducts an analytical investigation of the dynamic response characteristics of a two-stage series composite system (TsSCS) with a planetary transmission consisting of dual-power branches. An improved incremental harmonic balance (IHB) method,
X. Wang, S. An, Y. Wang, J. Ruan, B. Fu
doaj   +1 more source

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