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