i1 : M = random(ZZ^3, ZZ^5) o1 = | 1 3 6 8 9 | | 6 5 1 6 0 | | 9 3 0 4 6 | 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, 6, 9}), map(QQ,R,{3, 5, 3}), map(QQ,R,{6, 1, 0}), ------------------------------------------------------------------------ map(QQ,R,{8, 6, 4}), map(QQ,R,{9, 0, 6})} o3 : List |
i4 : apply (gens(R),r->phi#2 r) o4 = {6, 1, 0} o4 : List |
i5 : phi#2 o5 = map(QQ,R,{6, 1, 0}) o5 : RingMap QQ <--- R |