next | previous | forward | backward | up | top | index | toc | Macaulay2 website
Macaulay2Doc :: source(RingMap)

source(RingMap) -- find the source ring for a map of rings

Synopsis

Description

i1 : S = ZZ/10007[x, y, z];
i2 : R = ZZ/10007[t];
i3 : f = map(R,S,{t^3,t^4,t^5})

                  3   4   5
o3 = map (R, S, {t , t , t })

o3 : RingMap R <--- S
i4 : source f

o4 = S

o4 : PolynomialRing