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WANG Bingjie1, XU Zhiguo2
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Abstract: The aim of this paper is to study the nonintegrability for diffeomorphisms. We first gave a necessary condition for diffeomorphisms to have formal first integrals. Furthermore, we gave a necessary condition for diffeomorphismsto have formal first integrals in the simple resonance cases.
Key words: diffeomorphisms, first integral, nonintegrability, resonance
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WANG Bingjie, XU Zhiguo. Nonintegrability for Diffeomorphisms[J].J4, 2008, 46(06): 1113-1115.
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URL: http://xuebao.jlu.edu.cn/lxb/EN/
http://xuebao.jlu.edu.cn/lxb/EN/Y2008/V46/I06/1113
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