Now showing items 1-10 of 217
Removable paths and cycles with parity constraints
(Academic Press Inc Elsevier ScienceSan DiegoEUA, 2014)
Limit cycles in planar piecewise linear differential systems with nonregular separation line
In this paper we deal with planar piecewise linear differential systems defined in two zones. We consider the case when the two linear zones are angular sectors of angles α and 2π−α, respectively, for α∈(0,π). We study the ...
On the number of limit cycles in discontinuous piecewise linear differential systems with two pieces separated by a straight line
(Elsevier B.V., 2015-04-01)
In this paper we study the maximum number N of limit cycles that can exhibit a planar piecewise linear differential system formed by two pieces separated by a straight line. More precisely, we prove that this maximum number ...
A weaker version of Lovasz' path removal conjecture
(Academic Press Inc Elsevier ScienceSan DiegoEUA, 2008)
Non-separating paths in 4-connected graphs
(Birkhauser Verlag AgBaselSuíça, 2005)
Limit cycles bifurcating from discontinuous centres
(Oxford Univ Press, 2017-08-01)
In this article, we study limit cycles in discontinuous piecewise linear vector fields in R-2 and R-3. More precisely, we address the problem of understanding the dynamics around a degenerated two-fold singularity in R-2 ...
Limit cycles via higher order perturbations for some piecewise differential systems
(Elsevier B.V., 2018-05-15)
A classical perturbation problem is the polynomial perturbation of the harmonic oscillator, (x', y') = (-y + epsilon f(x, y, epsilon), x + epsilon g(x, y, epsilon)). In this paper we study the limit cycles that bifurcate ...
Spanning Trees With Nonseparating Paths
(ELSEVIER SCIENCE BVAMSTERDAM, 2016)
Effects of LHRH on avoidance conditioning in normally cycling and ovariectomized female rats
Several studies have demonstrated that the peptide LHRH can modify behavior in the male rat. Peripheral and intracerebral infusions of LHRH impair the acquisition of conditioned avoidance responses (CARs) and increase some ...