i1 : M = random(ZZ^3, ZZ^5) o1 = | 1 3 8 7 2 | | 9 2 9 1 6 | | 8 7 2 6 8 | 3 5 o1 : Matrix ZZ <--- ZZ |
i2 : R = QQ[x,y,z] o2 = R o2 : PolynomialRing |
i3 : phi = makeRingMaps(M,R) o3 = {map(QQ,R,{1, 9, 8}), map(QQ,R,{3, 2, 7}), map(QQ,R,{8, 9, 2}), ------------------------------------------------------------------------ map(QQ,R,{7, 1, 6}), map(QQ,R,{2, 6, 8})} o3 : List |
i4 : apply (gens(R),r->phi#2 r) o4 = {8, 9, 2} o4 : List |
i5 : phi#2 o5 = map(QQ,R,{8, 9, 2}) o5 : RingMap QQ <--- R |