PolyAlgebraHom |
Syntax |
PolyAlgebraHom(Domain: RING, Codomain: RING, images: LIST): RINGHOM |
Description |
Example |
/**/ use R ::= QQ[x,y,z]; /**/ S ::= QQ[x[1..3]]; /**/ phi := PolyAlgebraHom(R, S, indets(S)); /**/ phi(x^2-y); x[1]^2 -x[2] /**/ S ::= QQ[a]; /**/ phi := PolyAlgebraHom(R, S, [RingElem(S,"a"),1,0]); /**/ phi(x^2-y); a^2 -1 /**/ phi := PolyAlgebraHom(R, QQ, [2,1,0]); --> evaluate at [2,1,0] /**/ phi(x^2-y); 3 |
See Also |