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Abstract
In this paper we
construct a triangular map $F$ on $I^2$ which holds the following
property. For each $[a,b]\subseteq I=[0,1]$, $a\leq b$, there exists $(p,q)\in
I^2$ \ $I_0$ such that $\omega_F(p,q)=$ {0} $\times
[a,b]\subset I_0$ where $I_0=${0}$\times I$. Moreover, for
each $(p,q)\in I^{2}$, the set $\omega_F(p,q)$ is exactly
{0} $\times J$ where $J\subset I$ is a compact interval
degenerate or not. So, we describe completely the family
$\mathcal W(F)=${$\omega_F(p,q):(p,q)\in I^2$} and establish
$\mathcal W(F)$ as the set of all compact interval, degenerate or
not, of $I_0$.
Mathematics Subject Classification: 37B20, 37B99.
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