i1 : M = random(ZZ^3, ZZ^5) o1 = | 2 7 7 6 4 | | 8 6 4 7 0 | | 3 3 8 9 1 | 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, 8, 3}), map(QQ,R,{7, 6, 3}), map(QQ,R,{7, 4, 8}), ------------------------------------------------------------------------ map(QQ,R,{6, 7, 9}), map(QQ,R,{4, 0, 1})} o3 : List |
i4 : apply (gens(R),r->phi#2 r) o4 = {7, 4, 8} o4 : List |
i5 : phi#2 o5 = map(QQ,R,{7, 4, 8}) o5 : RingMap QQ <--- R |