The study of dynamic equations on time scales provides a unified analysis of different types of dynamic equations such as differential equations and differe
We study a type of polynomial Li(e)nard system of degree m with polynomial perturbations of degree n.We prove that such systems can have at most n+1-([ n+1/
This talk is concerned with the upper bound of the number of limit cycles in unfolding of codimension 3 planar singularities with nilpotent linear parts,whi
Recurrent dynamics(periodic,almost periodic,almost automorphic,Birkhoff recurrent,Poisson stable motions etc)play important roles in the study of differenti