Difference between revisions of "ApCoCoA-1:DA.LD"

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(New page: <command> <title>diffalg.LD</title> <short_description>Compute the leading derivative of a polynomial.</short_description> <syntax> $diffalg.LD(F:POLY):POLY </syntax> <description>...)
 
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<command>
 
<command>
 
     <title>diffalg.LD</title>
 
     <title>diffalg.LD</title>
     <short_description>Compute the leading derivative of a polynomial.</short_description>
+
     <short_description>the leading derivative of a differential polynomial</short_description>
 
<syntax>
 
<syntax>
 
$diffalg.LD(F:POLY):POLY
 
$diffalg.LD(F:POLY):POLY

Revision as of 09:06, 22 December 2008

diffalg.LD

the leading derivative of a differential polynomial

Syntax

$diffalg.LD(F:POLY):POLY

Description

LD computes the leading derivative of polynomial F wrt. the current differential term ordering, or the hereby induced ranking respectivly.

Example

Use Q[x[1..2,0..20]];
Use Q[x[1..2,0..20]], Ord($diffalg.DiffTO("DegOrd"));
F:=x[1,2]^2*x[1,1]-x[2,4]^3;
$diffalg.LD(F);
-------------------------------
x[2,4]
-------------------------------

Diffalg.DiffTO