Results 31 to 40 of about 5,150,775 (195)

Subharmonic solutions for a class of predator-prey models with degenerate weights in periodic environments

open access: yesOpen Mathematics, 2023
This article deals with the existence, multiplicity, minimal complexity, and global structure of the subharmonic solutions to a class of planar Hamiltonian systems with periodic coefficients, being the classical predator-prey model of V.
López-Gómez Julián   +2 more
doaj   +1 more source

Hankel operators between different doubling Fock spaces

open access: yesJournal of Inequalities and Applications, 2022
In this paper, we study Hankel operators on the doubling Fock spaces for all possible 1 ≤ p , q < ∞ $1\leq p ...
Jianjun Chen, Guangxia Xu
doaj   +1 more source

Subharmonic Mixer Based on EBG Technology [PDF]

open access: yes, 2013
We present the design of a submillimeter-wave mixer based on electromagnetic band gap (EBG) technology and using subharmonic local oscillator (LO) injection.
Gonzalo, Ramon   +8 more
core   +1 more source

Vertical Transient Response Analysis of a Cracked Jeffcott Rotor Based on Improved Empirical Mode Decomposition

open access: yesVibration, 2022
The crack-induced changes in the vertical transient response of a rotating shaft–disc system, Jeffcott rotor, are investigated for transverse crack detection. The crack is considered as a breathing crack.
Hamid Khorrami   +2 more
doaj   +1 more source

Families of subharmonic functions and separately subharmonic functions

open access: yesComplex Variables and Elliptic Equations, 2019
There was an error.
openaire   +2 more sources

A new application of boundary integral behaviors of harmonic functions to the least harmonic majorant

open access: yesBoundary Value Problems, 2017
Our main aim in this paper is to obtain a new type of boundary integral behaviors of harmonic functions in a smooth cone. As an application, the least harmonic majorant of a nonnegative subharmonic function is also given.
Minghua Han, Jianguo Sun, Gaoying Xue
doaj   +1 more source

Analysis of the Underwater Wireless Optical Communication Channel Based on a Comprehensive Multiparameter Model

open access: yesApplied Sciences, 2021
A comprehensive multiparameter model is proposed for underwater wireless optical communication (UWOC) channels to integrate the effects of absorption, scattering, and dynamic turbulence.
Rujun Cai   +4 more
doaj   +1 more source

On McConnell’s inequality for functionals of subharmonic functions [PDF]

open access: yesPacific Journal of Mathematics, 1987
\textit{T. R. McConnell} [Indiana Univ. Math. J. 33, 289-303 (1984; Zbl 0508.31005)] showed that if u(x,t) is a non-negative subharmonic function defined on \({\mathbb{R}}_+^{n+1}=\{(x,t):\quad x\in {\mathbb{R}}^ n,\quad t>0\},\) and if \[ N(x)=\sup \{u(y,t):\quad (y,t)\in \Gamma_ 1(x)\}\quad and\quad S(x)=\iint_{(y,t)\in \Gamma_ 1(x)}t^{1-n}\Delta u(x,
openaire   +2 more sources

Representation of subharmonic functions in a half-plane

open access: yes, 2021
The theory of subharmonic functions of finite order is based to a considerable extent on integral formulae. In the present paper representations are obtained for subharmonic functions in the upper half-plane with more general growth gamma(r) than finite ...
Malyutin, K. G., Sadik, N.
core   +1 more source

On subharmonic functions [PDF]

open access: yesBulletin of the American Mathematical Society, 1943
Not ...
openaire   +2 more sources

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