Synopsis:
i1 : set {a,b,c} ++ set {b,c,d} o1 = Set {(0, a), (0, b), (1, b), (0, c), (1, c), (1, d)} o1 : Set
Code:
-- ../../../Macaulay2/m2/set.m2:44 Set ++ Set := Set => (x,y) -> applyKeys(x,i->(0,i)) + applyKeys(y,j->(1,j))