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

From ApCoCoAWiki
(Added parameter and return value list.)
(Updated parameter and return value list.)
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Please note that in order to use this function you have to start the ApCoCoABBFServer.
 
Please note that in order to use this function you have to start the ApCoCoABBFServer.
 
<itemize>
 
<itemize>
   <item>@return List of polynomials (list of terms in fact).</item>
+
   <item>@return A list of border basis polynomial leading terms.</item>
 
</itemize>
 
</itemize>
 
<example>
 
<example>

Revision as of 12:28, 22 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.

  • @return A list of border basis polynomial leading terms.

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