From 877268a0de707a979be934d888518f6cc02d73a6 Mon Sep 17 00:00:00 2001
From: Norbert Preining <norbert@preining.info>
Date: Tue, 10 Mar 2020 03:01:27 +0000
Subject: CTAN sync 202003100301

---
 .../NamedGraphs/doc/latex/NamedGraphs-Heawood.tex  | 47 ++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 obsolete/macros/latex/contrib/tkz/tkz-berge/NamedGraphs/doc/latex/NamedGraphs-Heawood.tex

(limited to 'obsolete/macros/latex/contrib/tkz/tkz-berge/NamedGraphs/doc/latex/NamedGraphs-Heawood.tex')

diff --git a/obsolete/macros/latex/contrib/tkz/tkz-berge/NamedGraphs/doc/latex/NamedGraphs-Heawood.tex b/obsolete/macros/latex/contrib/tkz/tkz-berge/NamedGraphs/doc/latex/NamedGraphs-Heawood.tex
new file mode 100644
index 0000000000..c93a1c99ac
--- /dev/null
+++ b/obsolete/macros/latex/contrib/tkz/tkz-berge/NamedGraphs/doc/latex/NamedGraphs-Heawood.tex
@@ -0,0 +1,47 @@
+\newpage\section{Heawood graph}\label{heawood}
+%<––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
+%<–––––––––––––––––––––––––––––    HEAWOOD  ––––––––––––––––––––––––––––––––>
+%<––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
+\begin{NewMacroBox}{grHeawood}{\oarg{options}}
+
+\medskip
+From Wikipedia \url{http://en.wikipedia.org/wiki/Heawood_graph}
+
+\emph{The Heawood graph is an undirected graph with 14 vertices and 21 edges. Each vertex is adjacent to exactly three edges (that is, it is a cubic graph), and all cycles in the graph have six or more edges.  Percy John Heawood (1861-1955) was an English mathematician who spent a large amount of time on questions related to the four colour theorem.}
+
+\medskip
+From MathWorld \url{http://mathworld.wolfram.com/HeawoodGraph.html}
+
+\emph{The Heawood graph is the unique $(3,6)$-cage graph and Moore graph and is  graph illustrated below in one of his embeddings.}
+\href{http://mathworld.wolfram.com/topics/GraphTheory.html}%
+           {\textcolor{blue}{MathWorld}} by \href{http://en.wikipedia.org/wiki/Eric_W._Weisstein}%
+           {\textcolor{blue}{E.Weisstein}}
+\end{NewMacroBox}
+
+\subsection{\tkzname{Heawood graph}}
+\begin{center}
+\begin{tkzexample}[vbox]
+\begin{tikzpicture}%
+   \GraphInit[vstyle=Shade]
+   \grHeawood[RA=7]
+ \end{tikzpicture}
+\end{tkzexample} 
+\end{center}
+
+\vfill\newpage
+It can be represented in LCF notation as  $\big[5,-5\big]^7$
+
+\tkzcname{grLCF[RA=5]\{5,9\}\{7\}} gives the result because  $-5 = 9\ mod\  14$.
+
+\subsection{\tkzname{Heawood graph with LCF notation}}\label{lcf2}
+\begin{center}
+\begin{tkzexample}[vbox]
+\begin{tikzpicture}%
+   \GraphInit[vstyle=Art]
+   \grLCF[RA=7]{5,9}{7}%
+ \end{tikzpicture}
+\end{tkzexample} 
+\end{center}
+
+
+\vfill\endinput
\ No newline at end of file
-- 
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