A
diagram used to visualize a
Coxeter group, it is a labeled
graph with
nodes indexed by the generators of a
Coxeter group and (P
i P
j) is an
edge whenever M
ij > 2 which is labeled with M
ij, where M
ij is an entry in the
Coxeter matrix corresponding to the given
Coxeter group.
--back to
combinatorics--