Fixed point indices of iterates of orientation-reversing homeomorphisms

IF 2.3 2区 数学 Q1 MATHEMATICS Journal of Differential Equations Pub Date : 2025-04-18 DOI:10.1016/j.jde.2025.113322
Grzegorz Graff , Patryk Topór
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Abstract

We show that any sequence of integers satisfying necessary Dold's congruences is realized as the sequence of fixed point indices of the iterates of an orientation-reversing homeomorphism of Rm for m3. As an element of the construction of the above homeomorphism, we consider the class of boundary-preserving homeomorphisms of R+m and give the answer to the problem posed by Barge and Wójcik (2017) [2] providing a complete description of the forms of fixed point indices for this class of maps.
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方向反转同胚迭代的不动点指标
证明了在m≥3时,满足必要Dold同余的任何整数序列都是Rm的逆方向同胚迭代的不动点指标序列。作为上述同胚构造的一个要素,我们考虑了R+m的一类保边同胚,并给出了Barge和Wójcik(2017)[2]提出的问题的答案,提供了这类映射的不动点指标形式的完整描述。
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来源期刊
CiteScore
4.40
自引率
8.30%
发文量
543
审稿时长
9 months
期刊介绍: The Journal of Differential Equations is concerned with the theory and the application of differential equations. The articles published are addressed not only to mathematicians but also to those engineers, physicists, and other scientists for whom differential equations are valuable research tools. Research Areas Include: • Mathematical control theory • Ordinary differential equations • Partial differential equations • Stochastic differential equations • Topological dynamics • Related topics
期刊最新文献
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