Journal of Formalized Mathematics
Volume 13, 2001
University of Bialystok
Copyright (c) 2001
Association of Mizar Users
More on External Approximation of a Continuum
-
Andrzej Trybulec
-
University of Bialystok
Summary.
-
The main goal was to prove two facts:
\begin{itemize}
\itemsep-3pt
\item the gauge is the Go-Board of a corresponding cage,
\item the left components of the complement of the curve determined by
a cage are monotonic wrt the index of the approximation.
\end{itemize}
Some auxiliary facts are proved, too.
At the end the new notion needed for the internal approximation are defined
and some useful lemmas are proved.
This work has been partially supported by CALCULEMUS grant HPRN-CT-2000-00102.
The terminology and notation used in this paper have been
introduced in the following articles
[37]
[10]
[46]
[39]
[12]
[32]
[3]
[40]
[22]
[2]
[42]
[34]
[47]
[49]
[48]
[7]
[9]
[8]
[1]
[4]
[19]
[5]
[11]
[44]
[13]
[23]
[24]
[43]
[45]
[28]
[36]
[50]
[18]
[35]
[6]
[20]
[30]
[41]
[21]
[26]
[27]
[31]
[33]
[29]
[16]
[38]
[14]
[15]
[17]
[25]
-
Preliminaries
-
Transforming Finite Sets to Finite Sequences
-
On the Construction of Go-Boards
-
More about Go-Boards
-
More about Gauges
-
More about Cages
-
Preparing the Internal Approximation
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Received October 7, 2001
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