中文

实二次有理映射熵的单调性

动力系统 2021-08-20 v3

摘要

基于相应模空间 M2(R)\mathcal{M}_2(\mathbb{R}) 划分为单调、覆盖、单峰和双峰区域的自然划分,研究了实圆 R{}\mathbb{R}\cup\{\infty\} 上实二次有理映射的熵的单调性。利用类多项式映射理论,我们证明了实熵函数 hRh_\mathbb{R} 的 level sets 在 M2(R)\mathcal{M}_2(\mathbb{R})(+)(-+-) 双峰区域和单峰区域的一部分中是连通的。基于数值证据,我们猜想单调性在整个单峰区域成立,但我们猜想它在 (++)(+-+) 双峰映射区域不成立。

关键词

引用

@article{arxiv.1901.03458,
  title  = {Monotonicity of entropy for real quadratic rational maps},
  author = {Khashayar Filom},
  journal= {arXiv preprint arXiv:1901.03458},
  year   = {2021}
}

备注

The statement of Theorem 6.2 is made more precise, and its proof is shortened. Lemma 6.5 and Remark 6.9 are new. To appear in Nonlinearity. May vary slightly from the published version. 51 pages, 16 figures