The cyclicity of the elliptic segment loops of the reversible quadratic Hamiltonian systems under quadratic perturbations |
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Authors: | Chengzhi Li Robert Roussarie |
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Institution: | a Department of Mathematics, LMAM and School of Mathematical Sciences, Peking University, Beijing 100871, People's Republic of China b Institut de Mathématique de Bourgogne, U.M.R. 5584 du C.N.R.S. Université de Bourgogne, B.P. 47 870, 21078 Dijon, Cedex, France |
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Abstract: | Denote by QH and QR the Hamiltonian class and reversible class of quadratic integrable systems. There are several topological types for systems belong to QH∩QR. One of them is the case that the corresponding system has two heteroclinic loops, sharing one saddle-connection, which is a line segment, and the other part of the loops is an ellipse. In this paper we prove that the maximal number of limit cycles, which bifurcate from the loops with respect to quadratic perturbations in a conic neighborhood of the direction transversal to reversible systems (called in reversible direction), is two. We also give the corresponding bifurcation diagram. |
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Keywords: | 34C07 34C08 37G15 |
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