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Characterizing Tent-like maps
by
Stewart Baldwin
Auburn University
The following definition is an obvious generalization of "tent" maps on an interval.
Definition: A map f:X → X of a continuum X is called tent-like
if there is a constant l > 1, a metric d on X generating
the topology, and two subcontinua
C1 and C2 with C1 ∪C2=X such that for any i=1, 2 and
any two points x, y of Ci, d(f(x), f(y))=ld(x, y).
In the case where X is a dendrite and the metric d is required to be a taxicab
metric, there is an elegant characterization of the property in terms of
kneading sequences. In this case, the constant l is unique and the
metric d is unique up to scale. We discuss recent attempts to generalize
these results to spaces X which are not dendrites.
Date received: February 28, 2006
Copyright © 2006 by the author(s). The author(s) of this document and the organizers of the conference have granted their consent to include this abstract in Atlas Conferences Inc. Document # cast-22.