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

From ApCoCoAWiki
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{{Version|1}}
 
<command>
 
<command>
     <title>diffalg.DiffOrd</title>
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     <title>DA.DiffOrd</title>
 
     <short_description>Computes the differential order of a differential polynomial.</short_description>
 
     <short_description>Computes the differential order of a differential polynomial.</short_description>
 
<syntax>
 
<syntax>
$diffalg.DiffOrd(F:POLY):INT
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DA.DiffOrd(F:POLY):INT
 
</syntax>
 
</syntax>
 
<description>
 
<description>
 
Computes the differential order of the differential polynomial F. The differential order is the maximum order of the derivatives occuring in the terms of F.
 
Computes the differential order of the differential polynomial F. The differential order is the maximum order of the derivatives occuring in the terms of F.
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<itemize>
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<item>@param <em>F</em> A differential polynomial.</item>
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<item>@return Order of F.</item>
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</itemize>
 
<example>
 
<example>
Use Q[x[1..2,0..20]];
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Use QQ[x[1..2,0..20]];
 
F:=x[1,4]^2-x[2,4]^3;
 
F:=x[1,4]^2-x[2,4]^3;
$diffalg.DiffOrd(F);
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DA.DiffOrd(F);
 
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</example>
 
</example>
 
</description>
 
</description>
<wiki-category>Package_diffalg</wiki-category>
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<types>
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<type>polynomial</type>
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</types>
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<key>DiffOrd</key>
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<key>DA.DiffOrd</key>
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<key>diffalg.DiffOrd</key>
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<key>differential.DiffOrd</key>
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<wiki-category>ApCoCoA-1:Package_diffalg</wiki-category>
 
</command>
 
</command>

Latest revision as of 09:57, 7 October 2020

This article is about a function from ApCoCoA-1.

DA.DiffOrd

Computes the differential order of a differential polynomial.

Syntax

DA.DiffOrd(F:POLY):INT

Description

Computes the differential order of the differential polynomial F. The differential order is the maximum order of the derivatives occuring in the terms of F.

  • @param F A differential polynomial.

  • @return Order of F.

Example

Use QQ[x[1..2,0..20]];
F:=x[1,4]^2-x[2,4]^3;
DA.DiffOrd(F);
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4
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