example of Munn tree

Let $X=\left\{a,b,c\right\}$ , $w=aaa^{-1}a^{-1}a^{-1}abb^{-1}ab^{-1}bcaa^{-1}cc^{-1}$ . The reduced prefix set of $w$ is

\mathrm{red}(\mathrm{pref}(w))=\left\{\varepsilon,a,aa,a^{-1},b,ab^{-1},ac,aca% ,acc\right\}.

The Munn tree $\mathrm{MT}(w)$ is the following.

\xymatrix{&b&{ab^{-1}}\ar[d]_{b}&\\ {a^{-1}}\ar[r]^{a}&\varepsilon\ar[u]^{b}\ar[r]^{a}&a\ar[d]^{c}\ar[r]^{a}&{aa}% \\ &&{ac}\ar[r]^{c}\ar[d]^{a}&{acc}\\ &&{aca}&}

Note that we have drawn only edges of the form $(v_{1},x,v_{2})$ (i.e. $\xymatrix{v_{1}\ar[r]^{x}&v_{2}}$ ) with $x\in X$ , leaving implicit the existence of the opposite edges $(v_{2},x^{-1},v_{1})$ (i.e. $\xymatrix{v_{2}\ar[r]^{x^{-1}}&v_{1}}$ ), as usual in the diagram representation of inverse word graphs.

Title	example of Munn tree
Canonical name	ExampleOfMunnTree
Date of creation	2013-03-22 16:12:02
Last modified on	2013-03-22 16:12:02
Owner	Mazzu (14365)
Last modified by	Mazzu (14365)
Numerical id	20
Author	Mazzu (14365)
Entry type	Example
Classification	msc 20M05
Classification	msc 20M18