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

From ApCoCoAWiki
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{{Version|1}}
 
<command>
 
<command>
     <title>diffalg.Class</title>
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     <title>DA.Class</title>
     <short_description>return the class of a given derivative</short_description>
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     <short_description>Returns the class of a given derivative.</short_description>
 
<syntax>
 
<syntax>
 
DA.Class(X:INDET):INT
 
DA.Class(X:INDET):INT
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The function Class returns the class of derivative X, i.e., the index of the differential indeterminate of which it is a derivative.
 
The function Class returns the class of derivative X, i.e., the index of the differential indeterminate of which it is a derivative.
 
<itemize>
 
<itemize>
<item>@param X Indeterminante for which the class is computed.</item>
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<item>@param <em>X</em> Indeterminate for which the class is computed.</item>
 
<item>@return The class of indeterminate X.</item>
 
<item>@return The class of indeterminate X.</item>
 
</itemize>
 
</itemize>
 
<example>
 
<example>
Use Q[x[1..2,0..20]];
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Use QQ[x[1..2,0..20]];
$diffalg.Class(x[2,8]);
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DA.Class(x[2,8]);
 
-------------------------------
 
-------------------------------
 
2
 
2
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</example>
 
</example>
 
</description>
 
</description>
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<types>
 
<types>
 
<type>polynomial</type>
 
<type>polynomial</type>
 
</types>
 
</types>
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<key>Class</key>
 
<key>Class</key>
 
<key>DA.Class</key>
 
<key>DA.Class</key>
 
<key>diffalg.Class</key>
 
<key>diffalg.Class</key>
 
<key>differential.Class</key>
 
<key>differential.Class</key>
<wiki-category>Package_diffalg</wiki-category>
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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.Class

Returns the class of a given derivative.

Syntax

DA.Class(X:INDET):INT

Description

The function Class returns the class of derivative X, i.e., the index of the differential indeterminate of which it is a derivative.

  • @param X Indeterminate for which the class is computed.

  • @return The class of indeterminate X.

Example

Use QQ[x[1..2,0..20]];
DA.Class(x[2,8]);
-------------------------------
2
-------------------------------