Difference between revisions of "ApCoCoA-1:BBF.RetrieveBorderBasisLTs"

From ApCoCoAWiki
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     <see>BBasis</see>
 
     <see>BBasis</see>
 
     <key>bbf.retrieveborderbasislts</key>
 
     <key>bbf.retrieveborderbasislts</key>
     <wiki-category>Package_BBF</wiki-category>
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     <wiki-category>Package_bbf</wiki-category>
 
</command>
 
</command>

Revision as of 12:25, 21 April 2009

BBF.RetrieveBorderBasisLTs

Retrieve leading terms of computed border basis.

Syntax

BBF.RetrieveBorderBasisLTs():LIST
BBF.RetrieveBorderBasisLTs(Degree:INT):LIST

Description

The first function without parameter retrieves the leading terms of the computed border basis polynomials from the ApCoCoABBFServer.

The second function with parameter Degree >= 0 retrieves the leading terms of degree Degree of the computed border basis polynomials.

Please note that in order to use this function you have to start the ApCoCoABBFServer.

Example

Use Z/(32003)[x, y, z],DegLex;
I:=Ideal(-4*x^2 + 1, -4*y^2 - 1, 5*z^2);
BBF.Init(I);
BBF.Finish();
-- After computation has finished:
BBF.RetrieveBorderBasisLTs();

Output:
[z^2, y^2, x^2, yz^2, y^2z, xz^2, xy^2, x^2z, x^2y, xyz^2, xy^2z, x^2yz]

Example

Use Z/(32003)[x, y, z],DegLex;
I:=Ideal(-4*x^2 + 1, -4*y^2 - 1, 5*z^2);
BBF.Init(I);
BBF.Finish();
-- After computation has finished:
BBF.RetrieveBorderBasisLTs(2);

Output:
[z^2, y^2, x^2]

Border Basis Framework overview

BBF.RetrieveBorderBasis

BBF.RetrieveBorderBasisPolyByLT

BBasis