de></a></li><li><a href="coxgroups.html#Chevie.PermRoot.reflection_subgroup-Tuple{CoxSym, AbstractVector{Int64}}"><code>Chevie.PermRoot.reflection_subgroup</code></a></li><li><a href="coxgroups.html#Chevie.PermRoot.reflection_subgroup-Tuple{CoxHyp, AbstractVector{Int64}}"><code>Chevie.PermRoot.reflection_subgroup</code></a></li><li><a href="coxgroups.html#FinitePosets.coxeter_matrix"><code>FinitePosets.coxeter_matrix</code></a></li><li><a href="coxgroups.html#PermGroups.Groups.elements-Tuple{CoxeterGroup, I