Difference between revisions of "ApCoCoA-1:Weyl.WMulByMonom"
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Revision as of 12:15, 24 April 2009
Weyl.WMulByMonom
Computes the product M*F of Weyl monomial M and a Weyl polynomial F in normal form.
Syntax
Weyl.WMulByMonom(M:POLY,F:POLY):POLY
Description
This function multiplies a Weyl monomial M with a polynomials F and returns M*F as a Weyl polynomial in normal form.
@param M A Weyl monomial.
@param F A Weyl polynomial.
@return The product M*F, a Weyl polynomial in normal form.
Note: Monomials and polynomials that are not in normal form should be first converted into normal form using Weyl.WNormalForm, otherwise you may get unexpected results.
Example
A1::=QQ[x,d]; --Define appropriate ring
Use A1;
M:=x^3d^4; F:=x^3+d^3+3xd+5;
Weyl.WMulByMonom(M,F);
x^6d^4 + x^3d^7 + 3x^4d^5 + 12x^5d^3 + 17x^3d^4 + 36x^4d^2 + 24x^3d
-------------------------------
Weyl.WMulByMonom(F,M); -- note the input
ERROR: 1st parameter should be a Monomial!
CONTEXT: Error("1st parameter should be a Monomial!")
-------------------------------
See also
