Tits cone
= Tits cone
{c}
{title2=$U$}
{wiki}
For the closed fundamental chamber $D\subseteq V^*$, the Tits cone is
$$
U=\bigcup_{w\in W}wD.
$$
It equals all of $V^*$ exactly when the finite-rank Coxeter group $W$ is finite.
= Tits cone
{c}
{title2=$U$}
{wiki}
For the closed fundamental chamber $D\subseteq V^*$, the Tits cone is
$$
U=\bigcup_{w\in W}wD.
$$
It equals all of $V^*$ exactly when the finite-rank Coxeter group $W$ is finite.