Abstract
The sixteen generators of Abelian integral \(I(h)=\oint _{\Gamma _h}g(x,y)dx-f(x,y)dy\), which satisfy eight different Picard–Fuchs equations respectively, are obtained, where \(\Gamma _h\) is a family of closed orbits defined by \(H(x,y)=ax^4+by^4+cx^8=h\), \(h\in \Sigma \), \(\Sigma \) is the open intervals on which \(\Gamma _h\) is defined, and f(x, y) and g(x, y) are real polynomials in x and y of degree n. Moreover, an upper bound of the number of zeros of I(h) is obtained for a special case
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Acknowledgements
Supported by National Natural Science Foundation of China (11701306), Construction of First-class Disciplines of Higher Education of Ningxia(pedagogy) (NXYLXK2017B11), Science and Technology Pillar Program of Ningxia (KJ[2015]26(4)), Higher Educational Science Program of Ningxia (NGY201789) and Key Program of Ningxia Normal University (NXSFZD1708).
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Yang, J. On the Algebraic Structure and the Number of Zeros of Abelian Integral for a Class of Hamiltonians with Degenerate Singularities. Bull Braz Math Soc, New Series 49, 893–913 (2018). https://doi.org/10.1007/s00574-018-0085-9
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DOI: https://doi.org/10.1007/s00574-018-0085-9