next | previous | forward | backward | up | top | index | toc | Macaulay2 web site
map > map(Ring,Ring,List)

map(Ring,Ring,List) -- make a ring map

Synopsis

Description

i1 : R = ZZ[x,y];
i2 : S = ZZ[a,b,c];
i3 : f = map(R,S,{x^2,x*y,y^2})

               2        2
o3 = map(R,S,{x , x*y, y })

o3 : RingMap R <--- S
i4 : f(a+b+c^2)

      4    2
o4 = y  + x  + x*y

o4 : R
i5 : g = map(R,S,{a=>x^2,b=>x*y,c=>y^2})

               2        2
o5 = map(R,S,{x , x*y, y })

o5 : RingMap R <--- S
i6 : g(a+b+c^2)

      4    2
o6 = y  + x  + x*y

o6 : R

See also