摘要

In this paper we mainly study the number of limit cycles which can bifurcate from the periodic orbits of the two centers %26lt;br%26gt;(x) over dot = -y, (y) over dot = x; %26lt;br%26gt;(x) over dot = -y(1 - (x(2) + y(2))(2)), (y) over dot = x(1 - (x(2) + y(2))(2)); %26lt;br%26gt;when they are perturbed inside the class of all polynomial differential systems with quintic homogeneous nonlinearities. We do this study using the averaging theory of first, second and third orders.

  • 出版日期2013-11-1