胡永航, 唐肖. 二维连续映射的分数次迭代J. 内江师范学院学报, 2026, 41(8): 19-24. DOI: 10.13603/j.cnki.51-1621/z.2026.08.004
    引用本文: 胡永航, 唐肖. 二维连续映射的分数次迭代J. 内江师范学院学报, 2026, 41(8): 19-24. DOI: 10.13603/j.cnki.51-1621/z.2026.08.004
    HU Yonghang, TANG Xiao. Fractional iteration of two-dimensional continuous mappingsJ. Journal of Neijiang Normal University, 2026, 41(8): 19-24. DOI: 10.13603/j.cnki.51-1621/z.2026.08.004
    Citation: HU Yonghang, TANG Xiao. Fractional iteration of two-dimensional continuous mappingsJ. Journal of Neijiang Normal University, 2026, 41(8): 19-24. DOI: 10.13603/j.cnki.51-1621/z.2026.08.004

    二维连续映射的分数次迭代

    Fractional iteration of two-dimensional continuous mappings

    • 摘要: 本研究探讨一类二维同胚映射的连续分数次迭代(迭代根)的存在性.首先给出了一维单调映射的迭代根理论,其次对满足特定条件(线性部分为双曲可逆矩阵,非线性扰动项为Lipschitz连续的有界函数)的二维同胚映射进行分析,当矩阵的两个特征值一个介于0和1,另一个大于1时,该映射对任意正整数阶数均存在同胚迭代根;当两个特征值满足其他特定组合时,该映射对所有正奇数阶数也存在同胚迭代根.

       

      Abstract: The existence of continuous fractional iterates (iterative roots) for a class of two-dimensional homeomorphisms is investigated. The theory of iterative roots for one-dimensional monotone mappings is first presented. Subsequently, an analysis is conducted on two-dimensional homeomorphisms satisfying specific conditions, where the linear part is a hyperbolic invertible matrix and the nonlinear perturbation is a Lipschitz continuous bounded function. The results indicate that when one eigenvalue of the matrix lies between 0 and 1 and the other is greater than 1, the mapping possesses homeomorphic iterative roots of any positive integer order. When the two eigenvalues satisfy other specific combinations, the mapping also admits homeomorphic iterative roots for all positive odd integer orders.

       

    /

    返回文章
    返回