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