Results 91 to 100 of about 2,789,352 (166)

Hyperbolicity versus weak periodic orbits inside homoclinic classes

open access: yes, 2017
We prove that, for$C^{1}$-generic diffeomorphisms, if the periodic orbits contained in a homoclinic class$H(p)$have all their Lyapunov exponents bounded away from zero, then$H(p)$must be (uniformly) hyperbolic.
XIAODONG WANG
core   +1 more source

Homoclinic solutions for a class of second order non-autonomous systems

open access: yesElectronic Journal of Differential Equations, 2009
This article concerns the existence of homoclinic solutions for the second order non-autonomous system $$ ddot q+A dot q-L(t)q+W_{q}(t,q)=0, $$ where $A$ is a skew-symmetric constant matrix, $L(t)$ is a symmetric positive definite matrix depending ...
Ziheng Zhang, Rong Yuan
doaj  

Mentoring for Faculty from Working-Class Backgrounds

open access: yes, 2020
Faculty mentoring across gender, race, and culture is facilitated by formal mentoring programs. Mentoring across the cultural differences associated with social class, however, represents a largely unaddressed gap in the provision of formal faculty ...
Poulsen, Joan R.   +3 more
core  

Generation of homoclinic tangencies by $C^1$-perturbations.

open access: yes, 2010
International audienceGiven a [C^1] -diffeomorphism [f] of a compact manifold, we show that if the stable/unstable dominated splitting along a saddle is weak enough, then there is a small [C^1] -perturbation that preserves the orbit of the saddle and ...
Gourmelon, Nicolas
core   +1 more source

Multiple homoclinic solutions for superquadratic Hamiltonian systems

open access: yesElectronic Journal of Differential Equations, 2016
In this article we study the existence of infinitely many homoclinic solutions for a class of second-order Hamiltonian systems $$ \ddot{u}-L(t)u+W_u(t,u)=0, \quad \forall t\in\mathbb{R}, $$ where L is not required to be either uniformly positive ...
Wei Jiang, Qingye Zhang
doaj  

Snake-to-isola transition and moving solitons via symmetry-breaking in discrete optical cavities [PDF]

open access: yes, 2010
This paper continues an investigation into a one-dimensional lattice equation that models the light field in a system comprised of a periodic array of pumped optical cavities with saturable nonlinearity.
Champneys, AR, Yulin, AV
core  

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