Found 6 Documents (Results 1–6)
Hopf bifurcation of a class of epidemic mathematical models. (Chinese. English summary) Zbl 1098.92059
Poincaré bifurcation for quadratic system with a bound of hyperbola and a single center. (Chinese. English summary) Zbl 1093.34523
Study on the Poincaré bifurcation of a quadratic system with two centers and two unbounded heteroclinic loops once again. (Chinese. English summary) Zbl 1067.34042
A condition for the existence of limit cycles of a centrally symmetric cubic system with two parabolic solutions. (Chinese. English summary) Zbl 0933.34021
Reviewer: Wang Cun-Zheng (Chengdu)
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