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arXiv 1608.03249math.SGmath.DS
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关于曲面上辛同胚的周期点

On Periodic Points of Symplectomorphisms on Surfaces

Marta Batoréo

摘要:

本文在亏格大于1的曲面上构造了一个辛流,该辛流恰好有2g-2个双曲不动点,且没有其它周期轨道。证明了亏格g大于1的曲面的(强非退化)辛同构有无穷多个周期点,如果存在平均指数为非零的不动点.由此得到两个推论,即如果合痕的通量是“无理的”,则具有椭圆不动点或严格大于2g-2不动点的辛同胚有无穷多个周期点.

英文摘要:

We construct a symplectic flow on a surface of genus g greater than one with exactly 2g-2 hyperbolic fixed points and no other periodic orbits. Moreover, we prove that a (strongly non-degenerate) symplectomorphism of a surface (with genus g greater than one) isotopic to the identity has infinitely many periodic points if there exists a fixed point with non-zero mean index. From this result, we obtain two corollaries, namely that such a symplectomorphism with an elliptic fixed point or with strictly more than 2g-2 fixed points has infinitely many periodic points provided that the flux of the isotopy is "irrational".

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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