Results 41 to 50 of about 254 (65)
, 2018 We obtain a new quantitative deformation lemma, and then gain a new mountain pass theorem. More precisely, the new mountain pass theorem is independent of the functional value on the boundary of the mountain, which improves the well known results (\cite ...
Ding, Liang +2 more
core +1 more source
, 2002 Abstract and Applied Analysis, Volume 7, Issue 5, Page 279-286, 2002.
Guang Zhang, Sui Sun Cheng
wiley +1 more source
Advances in Nonlinear Analysis, 2014 In this article we study the existence of positive periodic solutions for a fourth-order nonlinear neutral differential equation with variable delay.
Ardjouni Abdelouaheb +2 more
doaj +1 more source
Multiple periodic solutions to a class of nonautonomous second-order delay differential equation
Boundary Value Problems, 2013 The existence of the nontrivial periodic solutions for nonautonomous second-order delay differential equation x″(t)+λx(t)=−f(t,x(t),x(t−τ)) is investigated, where λ>π2/τ2, τ>0, f∈C1(R×R2,R).
Qiong Meng, Xiaosheng Zhang
semanticscholar +2 more sources
Forced Fermi-Pasta-Ulam lattice maps
, 2013 We prove existence and uniqueness results for periodic and quasiperiodic travelling waves of Fermi-Pasta-Ulam (FPU) type lattice maps. We also study quasiperiodic solutions of difference equations on Banach algebras as a natural generalizations of the ...
J. Diblík, Michal Feckan, M. Pospíšil
semanticscholar +1 more source
Infinitely many periodic solutions for a class of fractional Kirchhoff problems
, 2019 We prove the existence of infinitely many nontrivial weak periodic solutions for a class of fractional Kirchhoff problems driven by a relativistic Schr\"odinger operator with periodic boundary conditions and involving different types of ...
Ambrosio, Vincenzo
core +1 more source
Global exponential stability of nonautonomous neural network models with continuous distributed delays [PDF]
, 2013 For a family of non-autonomous differential equations with distributed delays, we give sufficient conditions for the global exponential stability of an equilibrium point. This family includes most of the delayed models of neural networks of Hopfield type,
Baldi +23 more
core +2 more sources
On the stability of periodic orbits in delay equations with large delay [PDF]
, 2011 We prove a necessary and sufficient criterion for the exponential stability of periodic solutions of delay differential equations with large delay. We show that for sufficiently large delay the Floquet spectrum near criticality is characterized by a set ...
A. L. Skubachevskii +20 more
core +3 more sources
The dynamical analysis of a nonlocal predator–prey model with cannibalism
European Journal of Applied MathematicsCannibalism is often an extreme interaction in the animal species to quell competition for limited resources. To model this critical factor, we improve the predator–prey model with nonlocal competition effect by incorporating the cannibalism term, and ...
Daifeng Duan +3 more
doaj +1 more source
Existence of solutions and stability for impulsive neutral stochastic functional differential equations [PDF]
, 2019 In this paper we prove some results on the existence of solutions and the mean square asymptotic stability for a class of impulsive neutral stochastic differential systems with variable delays by using a contraction mapping principle.
Benhadri, Mimia +2 more
core +1 more source