Difference between revisions of "ApCoCoA-1:BB.Box"

From ApCoCoAWiki
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<command>
 
<command>
 
   <title>BB.Box</title>
 
   <title>BB.Box</title>
   <short_description>Compute a box order ideal.</short_description>
+
   <short_description>Computes a box order ideal.</short_description>
 
    
 
    
 
<syntax>
 
<syntax>
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   <types>
 
   <types>
 
     <type>borderbasis</type>
 
     <type>borderbasis</type>
 +
    <type>ideal</type>
 
   </types>
 
   </types>
 
   <see>BB.Border</see>
 
   <see>BB.Border</see>

Revision as of 12:42, 28 April 2009

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, x]
-------------------------------

BB.Border