类曲面复合体上自映射的不动点索引界

IF 0.6 4区数学 Q3 MATHEMATICS

Topology and its Applications Pub Date : 2025-01-01 DOI:10.1016/j.topol.2024.109086

D.L. Gonçalves , M.R. Kelly

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引用次数: 0

摘要

对于一类非球面2-配合物，证明了涉及不动点指标的双曲指数界对所有不动点极小自映射都是满足的。作为一个推论，我们验证了自映射f:X→X的Nielsen不动点类的双曲指数界，当X是具有非正欧拉特征的紧曲面的有限楔时。

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Fixed point index bounds for self-maps on surfacelike complexes

For a certain family of aspherical 2-complexes it is shown that a pair of inequalities, known as hyperbolic index bounds, involving fixed point indices are satisfied for all fixed point minimal self-maps. As a corollary we verify the hyperbolic index bounds for the Nielsen fixed point classes of self-maps

f : X \to X

, when X is a finite wedge of compact surfaces each having non-positive Euler characteristic.

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来源期刊

Topology and its Applications 数学-数学

CiteScore

1.20

自引率

33.30%

发文量

251

审稿时长

6 months

期刊介绍： Topology and its Applications is primarily concerned with publishing original research papers of moderate length. However, a limited number of carefully selected survey or expository papers are also included. The mathematical focus of the journal is that suggested by the title: Research in Topology. It is felt that it is inadvisable to attempt a definitive description of topology as understood for this journal. Certainly the subject includes the algebraic, general, geometric, and set-theoretic facets of topology as well as areas of interactions between topology and other mathematical disciplines, e.g. topological algebra, topological dynamics, functional analysis, category theory. Since the roles of various aspects of topology continue to change, the non-specific delineation of topics serves to reflect the current state of research in topology. At regular intervals, the journal publishes a section entitled Open Problems in Topology, edited by J. van Mill and G.M. Reed. This is a status report on the 1100 problems listed in the book of the same name published by North-Holland in 1990, edited by van Mill and Reed.