(map,Module,Module,RingElement)
map(M,N,r) -- construct a map from a module N to M which is provided
by the ring element r.
If r is nonzero, then M and N should be equal,
or at least have the same number of generators.
i1 : R = ZZ/101[x]
o1 = R
o1 : PolynomialRing |
i2 : map(R^2,R^3,0)
o2 = 0
2 3
o2 : Matrix R <--- R |
i3 : map(R^2,R^2,x)
o3 = {0} | x 0 |
{0} | 0 x |
2 2
o3 : Matrix R <--- R |
i4 : q = map(R^2,R^2,x,Degree=>1)
o4 = {0} | x 0 |
{0} | 0 x |
2 2
o4 : Matrix R <--- R |
i5 : isHomogeneous q
o5 = false |
See also map(Module,Module,ZZ), map, and matrix.



