In this talk,we are concerned with a singularly perturbed higher-order KdV equation which is considered as a paradigm in nonlinear science and has many appl
In this talk we introduce persistent center problem of planar differential systems,and give answers for some systems and its relation between complex system
In this talk,we will give an analytical proof about the existence of Bogdanov-Takens bifurcation of codimension 3 in a predator-prey model with constant-yie