Results 31 to 40 of about 318,818 (290)

Anti-periodic solutions for second order differential equations

open access: yesApplied Mathematics Letters, 2011
The authors consider the existence of anti-periodic solutions for the following second order differential equation \[ (p(t)x')'+f(t,x)=0,\tag{1} \] where \(p\in C^1(\mathbb R)\) is a given \(T\)-periodic function, and \(p(t)>0\); \(f\in C^1(\mathbb R\times\mathbb R)\) is a \(T\)-anti-periodic function.
Wu, Rui, Cong, Fuzhong, Li, Yong
openaire   +1 more source

ANTI-PERIODIC SOLUTIONS FOR HIGHER-ORDER NONLINEAR ORDINARY DIFFERENTIAL EQUATIONS [PDF]

open access: yesJournal of the Korean Mathematical Society, 2010
In this paper, the existence of anti-periodic solutions for higher-order nonlinear ordinary dierential equations is studied by us- ing degree theory and some known results are improved to some extent.
Tai Yong Chen   +3 more
openaire   +1 more source

From Instantons to Sphalerons: Time-Dependent Periodic Solutions of SU(2)-Higgs Theory [PDF]

open access: yes, 1999
We solve numerically for periodic, spherically symmetric, classical solutions of SU(2)-Higgs theory in four-dimensional Euclidean space. In the limit of short periods the solutions approach tiny instanton-anti-instanton superpositions while, for longer ...
A. Kuznetsov   +13 more
core   +3 more sources

On Antiperiodic Boundary Value Problems for Higher-Order Fractional Differential Equations

open access: yesAbstract and Applied Analysis, 2012
We study an antiperiodic boundary value problem of nonlinear fractional differential equations of order q∈(4,5]. Some existence results are obtained by applying some standard tools of fixed-point theory.
Ahmed Alsaedi   +2 more
doaj   +1 more source

Magnetic Monopoles in String Theory [PDF]

open access: yes, 1992
Magnetic monopole solutions to heterotic string theory are discussed in toroidal compactifications to four spacetime dimensions. Particular emphasis is placed on the relation to previously studied fivebrane solutions in ten dimensions and on the ...
Banks   +29 more
core   +3 more sources

Synchronous motion of two vertically excited planar elastic pendula [PDF]

open access: yes, 2012
The dynamics of two planar elastic pendula mounted on the horizontally excited platform have been studied. We give evidence that the pendula can exhibit synchronous oscillatory and rotation motion and show that stable in-phase and anti-phase synchronous ...
Anicin   +40 more
core   +2 more sources

Breathers in the weakly coupled topological discrete sine-Gordon system [PDF]

open access: yes, 1998
Existence of breather (spatially localized, time periodic, oscillatory) solutions of the topological discrete sine-Gordon (TDSG) system, in the regime of weak coupling, is proved.
Agarwal R P   +15 more
core   +5 more sources

Isolating Segments and Anti-Periodic Solutions

open access: yesMonatshefte f?r Mathematik, 2002
Using the technique based on the notion of periodic isolating segments, the author establishes a sufficient condition for the existence of \(2^n\) geometrically distinct solutions of the two-point boundary value problem \[ \dot{x}=f(t,x), \qquad x(0)=g(x(nT)), \] where \(f\) is a smooth vector field on the manifold \(M\) and \(n\) is a positive integer.
openaire   +3 more sources

Anti-Periodic Solutions for Neural Networks with Delays and Impulses [PDF]

open access: yesMathematical and Computational Applications, 2013
In this paper we investigate a class of artificial neural networks with delays subject to periodic impulses. By exploiting Lyapunov functions, we analyze the global exponential stability of an arbitrary solution with initial value being bounded by Υ .
Shi, Peilin, Dong, Lingzhen
openaire   +1 more source

Periodic Travelling Waves in Dimer Granular Chains

open access: yes, 2012
We study bifurcations of periodic travelling waves in granular dimer chains from the anti-continuum limit, when the mass ratio between the light and heavy beads is zero.
A. Stefanov   +33 more
core   +1 more source

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