ApCoCoA-1:DA.DiffReduce: Difference between revisions
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<command> | <command> | ||
<title> | <title>DA.DiffReduce</title> | ||
<short_description> | <short_description>Computes a differential normal form of a differential polynomial wrt. a list of differential polynomials.</short_description> | ||
<syntax> | <syntax> | ||
DA.DiffReduce(F:POLY, G:LIST):POLY | |||
</syntax> | </syntax> | ||
<description> | <description> | ||
DiffReduce computes the differential normal form of F wrt. the set of differential polynomials G. | DA.DiffReduce computes the differential normal form of F wrt. the set of differential polynomials G. | ||
To this end, the elements of G are differentiated sufficiently often and the usual normal form is built. | To this end, the elements of G are differentiated sufficiently often and the usual normal form is built. | ||
<itemize> | |||
<item>@param F Differential polynomial to compute the normal form of.</item> | |||
<item>@param G List of differential polynomials to wrt. which the normal form of F is computed.</item> | |||
<item>@return Normal form of F wrt. G.</item> | |||
</itemize> | |||
<example> | <example> | ||
Use Q[x[1..1,0..20]]; | Use Q[x[1..1,0..20]]; | ||
Use Q[x[1..1,0..20]], Ord( | Use Q[x[1..1,0..20]], Ord(DA.DiffTO("Lex")); | ||
DA.DiffReduce(x[1,2]^2+x[1,0]^2+3, [x[1,1]+3x[1,0]]); | |||
------------------------------- | ------------------------------- | ||
82x[1,0]^2 + 3 | 82x[1,0]^2 + 3 | ||
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</example> | </example> | ||
</description> | </description> | ||
<see> | <types> | ||
<type>polynomial</type> | |||
</types> | |||
<see>DA.DiffTO</see> | |||
<key>DiffReduce</key> | |||
<key>DA.DiffReduce</key> | |||
<key>diffalg.DiffReduce</key> | |||
<key>differential.DiffReduce</key> | |||
<wiki-category>Package_diffalg</wiki-category> | <wiki-category>Package_diffalg</wiki-category> | ||
</command> | </command> | ||
Revision as of 13:10, 22 April 2009
DA.DiffReduce
Computes a differential normal form of a differential polynomial wrt. a list of differential polynomials.
Syntax
DA.DiffReduce(F:POLY, G:LIST):POLY
Description
DA.DiffReduce computes the differential normal form of F wrt. the set of differential polynomials G.
To this end, the elements of G are differentiated sufficiently often and the usual normal form is built.
@param F Differential polynomial to compute the normal form of.
@param G List of differential polynomials to wrt. which the normal form of F is computed.
@return Normal form of F wrt. G.
Example
Use Q[x[1..1,0..20]];
Use Q[x[1..1,0..20]], Ord(DA.DiffTO("Lex"));
DA.DiffReduce(x[1,2]^2+x[1,0]^2+3, [x[1,1]+3x[1,0]]);
-------------------------------
82x[1,0]^2 + 3
-------------------------------
