-- -*- M2-comint -*- hash: 12398691355911150958

i1 : R=QQ[x,y,z,w];

i2 : T=matrix({{-1,-1,2,0},{1,1,-2,-1}});

              2       4
o2 : Matrix ZZ  <-- ZZ

i3 : torusInvariants(T,R)

o3 = MonomialSubalgebra{cache => CacheTable{...1...}   }
                                        2           2
                        generators => {y z, x*y*z, x z}
                        ring => R

o3 : MonomialSubalgebra of R

i4 : 
