Ergodicity and Annular Homeomorphisms of the Torus

被引:3
|
作者
Bortolatto, Renato B. [1 ]
Tal, Fabio A. [1 ]
机构
[1] Univ Sao Paulo, Inst Matemat & Estat, BR-05508090 Sao Paulo, Brazil
关键词
Torus homeomorphisms; Rotation sets; Ergodicity; Periodic points; ROTATION VECTORS; RECURRENCE; POINTS; SETS;
D O I
10.1007/s12346-012-0095-8
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
Let f : T-2 -> T-2 be a homeomorphism homotopic to the identity and F : R-2 -> R-2 a lift of f such that the rotation set rho(F) is a line segment of rational slope containing a point in Q(2). We prove that if f is ergodic with respect to the Lebesgue measure on the torus and the average rotation vector (with respect to same measure) does not belong to Q(2) then some power of f is an annular homeomorphism.
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页码:377 / 391
页数:15
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