Notes on meromorphic dynamical systems, II
Otomar Hájek (1966)
Czechoslovak Mathematical Journal
Similarity:
Otomar Hájek (1966)
Czechoslovak Mathematical Journal
Similarity:
Otomar Hájek (1966)
Czechoslovak Mathematical Journal
Similarity:
Qi, Jianming, Zhu, Taiying (2010)
Abstract and Applied Analysis
Similarity:
Markov, Yavor (1996)
Serdica Mathematical Journal
Similarity:
We prove that in quadratic perturbations of generic Hamiltonian vector fields with two saddle points and one center there can appear at most two limit cycles. This bound is exact.