cartanMatrix(R)
i1 : R=rootSystemA(3) o1 = RootSystem{...8...} o1 : RootSystem
i2 : cartanMatrix R o2 = | 2 -1 0 | | -1 2 -1 | | 0 -1 2 | 3 3 o2 : Matrix ZZ <-- ZZ
The source of this document is in /build/reproducible-path/macaulay2-1.25.06+ds/M2/Macaulay2/packages/WeylGroups.m2:1603:0.