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The Excess Zero Graph of a Coxeter Group (2504.15994v1)
Published 22 Apr 2025 in math.GR
Abstract: For a Coxeter group $W$ with length function $\ell$, the excess zero graph $\mathcal{E}_0(W)$ has vertex set the non-identity involutions of $W$, with two involutions $x$ and $y$ adjacent whenever $\ell(xy)=\ell(x)+\ell(y)$. Properties of this graph such as connectivity, diameter and valencies of certain vertices of $\mathcal{E}_0(W)$ are explored.
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