Title of article :
Is the composite of two expansive maps expansive?
Author/Authors :
Roy، نويسنده , , Mario، نويسنده ,
Issue Information :
دوماهنامه با شماره پیاپی سال 2004
Abstract :
We study the question whether the composite of two expansive maps is itself expansive. The answer to this question is a resounding no. We will actually establish a stronger fact. We will give an example of two dynamical systems which are topologically exact and Ruelle expanding with respect to two different, equivalent and compatible metrics, but whose composite is far from being expansive, for it is locally eventually contracting towards a fixed point a completely invariant, dense open subspace.
Keywords :
(Positively) expansive maps , Ruelle expanding maps , Composite , Symbolic Dynamics
Journal title :
Topology and its Applications
Journal title :
Topology and its Applications