polycat.spad line 1210 [edit on github]
Mapping from polynomials over R
to polynomials over S
given a map from R
to S
assumed to send zero to zero.
map(f, p)
takes a function f
from R
to S
, and applies it to each (non-zero) coefficient of a polynomial p
over R
, getting a new polynomial over S
. Note: since the map is not applied to zero elements, it may map zero to zero.