ApCoCoA-1:DA.DiffGB: Difference between revisions

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New page: <command> <title>diffalg.DiffGB</title> <short_description>Compute a differential Groebner basis.</short_description> <syntax> $diffalg.DiffGB(I:IDEAL):LIST </syntax> <description>...
 
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<command>
<command>
     <title>diffalg.DiffGB</title>
     <title>diffalg.DiffGB</title>
     <short_description>Compute a differential Groebner basis.</short_description>
     <short_description>calculate a differential Groebner basis</short_description>
<syntax>
<syntax>
$diffalg.DiffGB(I:IDEAL):LIST
$diffalg.DiffGB(I:IDEAL):LIST

Revision as of 08:46, 22 December 2008

diffalg.DiffGB

calculate a differential Groebner basis

Syntax

$diffalg.DiffGB(I:IDEAL):LIST

Description

Returns a differential Groebner basis of the ideal I which is differentially generated by G wrt. the current differential term ordering. This function only terminates if the ideal I is zero dimensional and has a finite differential Groebner basis.

Example

Use Q[x[1..1,0..20]];
Use Q[x[1..1,0..20]], Ord($diffalg.DiffTO("Lex"));
$diffalg.DiffGB([x[1,1]^4+x[1,0]]);
-------------------------------
[x[1,3] - 8x[1,1]x[1,2]^3, x[1,1]^2x[1,2]^2 + 1/4x[1,2], x[1,0]x[1,2] - 1/4x[1,1]^2, x[1,1]^4 + x[1,0]]
-------------------------------