Open AccessIsolated periodic wave trains in a generalized Burgers–Huxley equation
Author(s) -
Qinlong Wang,
Yue Xiong,
Wentao Huang,
Valery G. Romanovski
Publication year - 2022
Publication title -
electronic journal on the qualitative theory of differential equations
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 33
ISSN - 1417-3875
DOI - 10.14232/ejqtde.2022.1.4
Subject(s) - mathematics , eigenvalues and eigenvectors , degenerate energy levels , mathematical analysis , limit (mathematics) , zero (linguistics) , singular point of a curve , bifurcation theory , burgers' equation , bifurcation , pure mathematics , nonlinear system , partial differential equation , linguistics , philosophy , physics , quantum mechanics
We study the isolated periodic wave trains in a class of modified generalized Burgers–Huxley equation. The planar systems witha degenerate equilibrium arising after the traveling transformation are investigated. By finding certain positive definite Lyapunov functions in the neighborhood of the degenerate singular points and the Hopf bifurcation points, the number of possible limit cycles in the corresponding planar systems is determined. The existence of isolated periodic wave trains in the equation is established, which is universal for any positive integer n in this model. Within the process, one interesting example is obtained, namely a series of limit cycles bifurcating from a semi-hyperbolic singular point with one zero eigenvalue and one non-zero eigenvalue for its Jacobi matrix.