Results 11 to 20 of about 504 (31)

Hopf bifurcation at infinity and dissipative vector fields of the plane

open access: yes, 2016
We describe some families of differentiable vector fields with the Hopf bifurcation at infinity, without assuming the continuous differentiability. These vector fields have isolated singular points on the plane, and the initial families are obtained by ...
Alarcón, Begoña, Rabanal, Roland
core   +1 more source

Critical Transitions In a Model of a Genetic Regulatory System

open access: yes, 2014
We consider a model for substrate-depletion oscillations in genetic systems, based on a stochastic differential equation with a slowly evolving external signal. We show the existence of critical transitions in the system.
Berwald, Jesse, Gidea, Marian
core   +1 more source

The generic unfolding of a codimension-two connection to a two-fold singularity of planar Filippov systems

open access: yes, 2017
Generic bifurcation theory was classically well developed for smooth differential systems, establishing results for $k$-parameter families of planar vector fields.
Novaes, Douglas Duarte   +2 more
core   +1 more source

Dynamics near manifolds of equilibria of codimension one and bifurcation without parameters

open access: yes, 2010
We investigate the breakdown of normal hyperbolicity of a manifold of equilibria of a flow. In contrast to classical bifurcation theory we assume the absence of any flow-invariant foliation at the singularity transverse to the manifold of equilibria.
Liebscher, Stefan
core   +1 more source

A geometric analysis of the SIRS epidemiological model on a homogeneous network. [PDF]

open access: yesJ Math Biol, 2021
Jardón-Kojakhmetov H   +3 more
europepmc   +1 more source

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