Difference between revisions of "ApCoCoA-1:Weyl.WRGB"

From ApCoCoAWiki
(Change Wiki-category)
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   <command>
 
   <command>
 
     <title>Weyl.WRGB</title>
 
     <title>Weyl.WRGB</title>
     <short_description>Reduced Groebner basis of an ideal I in Weyl algebra <math>A_n</math>.</short_description>
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     <short_description>Reduced Groebner basis of an ideal I in Weyl algebra <tt>A_n</tt>.</short_description>
 
<syntax>
 
<syntax>
Weyl.WRGB(L:LIST):LIST
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Weyl.WRGB(GB:LIST):LIST
 
</syntax>
 
</syntax>
 
     <description>
 
     <description>
 +
This function converts Groebner basis GB computed by implementation in CoCoALib into reduced Groebner Basis. If GB is not a Groebner basis then the output will not be reduced Groebner basis. In fact, this function reduces a list GB of Weyl polynomals using <ref>Weyl.WNR</ref> into a new list L such that Ideal(L) = Ideal(GB).
 +
This function is used inside the function <ref>Weyl.WGB</ref> to get a list of minimal Groebner basis elements for the ideal I.
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 +
<itemize>
 +
<item>@param <em>GB</em> Groebner Basis of an ideal in the Weyl algebra.</item>
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<item>@result The reduced Groebner Basis of the given ideal.</item>
 +
</itemize>
  
This function converts Groebner basis GB computed by implementation in CoCoALib into reduced Groebner Basis. If GB is not a Groebner basis then the output will not be reduced Groebner basis. In fact, this function reduces a list GB of Weyl polynomals using WNR(F,L) into a new list L such that Ideal(L) = Ideal(GB).
 
This function is used inside the function WGB(I) to get a list of minimal Groebner basis elements for the ideal I.
 
 
<example>
 
<example>
 
A1::=QQ[x,d]; --Define appropraite ring
 
A1::=QQ[x,d]; --Define appropraite ring
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       <see>Weyl.WNormalForm</see>
 
       <see>Weyl.WNormalForm</see>
 
       <see>Weyl.WGB</see>
 
       <see>Weyl.WGB</see>
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      <see>Groebner, and more</see>
 
     </seealso>
 
     </seealso>
 
     <types>
 
     <types>
 
       <type>cocoaserver</type>
 
       <type>cocoaserver</type>
 +
      <type>groebner</type>
 
     </types>
 
     </types>
 
     <key>weyl.wrgb</key>
 
     <key>weyl.wrgb</key>
 +
    <key>wrgb</key>
 
     <wiki-category>Package_weyl</wiki-category>
 
     <wiki-category>Package_weyl</wiki-category>
 
   </command>
 
   </command>

Revision as of 13:07, 23 April 2009

Weyl.WRGB

Reduced Groebner basis of an ideal I in Weyl algebra A_n.

Syntax

Weyl.WRGB(GB:LIST):LIST

Description

This function converts Groebner basis GB computed by implementation in CoCoALib into reduced Groebner Basis. If GB is not a Groebner basis then the output will not be reduced Groebner basis. In fact, this function reduces a list GB of Weyl polynomals using Weyl.WNR into a new list L such that Ideal(L) = Ideal(GB).

This function is used inside the function Weyl.WGB to get a list of minimal Groebner basis elements for the ideal I.

  • @param GB Groebner Basis of an ideal in the Weyl algebra.

  • @result The reduced Groebner Basis of the given ideal.

Example

A1::=QQ[x,d];	--Define appropraite ring
Use A1;
L:=[x,d,1]
Weyl.WRGB(L);
[1]
-------------------------------

See also

Weyl.WNormalForm

Weyl.WGB

Groebner, and more