Difference between revisions of "ApCoCoA-1:BB.Box"
From ApCoCoAWiki
(Corrected example. (Skaspar)) |
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| Line 15: | Line 15: | ||
Use QQ[x,y,z]; | Use QQ[x,y,z]; | ||
BB.Box([2,1,1]); | BB.Box([2,1,1]); | ||
| − | [1, x] | + | |
| + | [1, z, y, x, yz, xz, xy, x^2, xyz, x^2z, x^2y, x^2yz] | ||
------------------------------- | ------------------------------- | ||
</example> | </example> | ||
Revision as of 23:30, 31 March 2011
BB.Box
Computes a box order ideal.
Syntax
BB.Box(D:LIST):LIST
Description
Computes the box order ideal of type D=[D_1,..,D_N]. The input is a list of integers D of length NumIndets(). The output is a list of terms sorted in ascending order with respect to the current term ordering.
@param D List of integer values representing an exponent vector of a term. The order ideal spanned by the term represented by this exponent vector will be computed.
@return A list of terms of the order ideal spanned by the term represented by the exponent vector D, sorted in ascending order w.r.t. the current term ordering.
Example
Use QQ[x,y,z]; BB.Box([2,1,1]); [1, z, y, x, yz, xz, xy, x^2, xyz, x^2z, x^2y, x^2yz] -------------------------------
