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Inverse Jacobian multipliers and Hopf bifurcation on center manifolds
张祥 教授(上海交通大学)
2018-01-01 12:13  华东师范大学

摘要:In this talk we report our recent results on a class of higher dimensional differential systems in $R^n$ which have a two dimensional center manifold at the origin with a pair of pure imaginary eigenvalues. First we characterize the existence of either analytic or $C^\infty$ inverse Jacobian multipliers of the systems around the origin, which is either a center or a focus on the center manifold. Later we study the cyclicity of the system at the origin through Hopf bifurcation by using the vanishing multiplicity of the inverse Jacobian multiplier.