Difference between revisions of "ApCoCoA-1:LinBox.Det"

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<command>
 
<command>
 
   <title>LinBox.Det</title>
 
   <title>LinBox.Det</title>
   <short_description>Compute the determinant of a matrix.</short_description>
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   <short_description>Computes the determinant of a matrix.</short_description>
   <syntax>LinBox.Det(M:MAT):RAT, INT or ZMOD</syntax>
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<syntax>
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LinBox.Det(M:MAT):RAT, INT or ZMOD
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</syntax>
 
   <description>
 
   <description>
This function returns the determinant of the square matrix <tt>M</tt> computed by the ApCoCoAServer using LinBox functions. Please note that in contrary to the built in CoCoA <tt>Det</tt> function the entries of <tt>M</tt> are only allowed to be of type RAT, INT or ZMOD. The resulting type depends on the types of the entries of the matrix.
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<em>Please note:</em> The function(s) explained on this page is/are using the <em>ApCoCoAServer</em>. You will have to start the ApCoCoAServer in order to use it/them.
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<par/>
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This function returns the determinant of the square matrix <tt>M</tt> computed by the ApCoCoAServer using LinBox functions. Please note that in contrary to the built in CoCoA <tt>Det</tt> function the entries of <tt>M</tt> are only allowed to be of type <tt>RAT</tt>, <tt>INT</tt> or <tt>ZMOD</tt>. The resulting type depends on the types of the entries of the matrix.
 
<itemize>
 
<itemize>
   <item>@param <em>M</em> A square matrix whose components are either of type INT, RAT or ZMOD.</item>
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   <item>@param <em>M</em> A square matrix whose components are either of type <tt>INT</tt>, <tt>RAT</tt> or <tt>ZMOD</tt>.</item>
   <item>@return The determinant of A.</item>
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   <item>@return The determinant of <tt>A</tt>.</item>
 
</itemize>
 
</itemize>
 
<example>
 
<example>
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</example>
 
</example>
 
   </description>
 
   </description>
   <see>Det</see>
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   <see>ApCoCoA-1:Introduction to CoCoAServer|Introduction to CoCoAServer</see>
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  <see>ApCoCoA-1:LinAlg.Det|LinAlg.Det</see>
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  <see>ApCoCoA-1:Det|Det</see>
 
   <types>
 
   <types>
 
     <type>matrix</type>
 
     <type>matrix</type>
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   <key>linbox.Det</key>
 
   <key>linbox.Det</key>
 
   <key>determinant</key>
 
   <key>determinant</key>
   <wiki-category>Package_linbox</wiki-category>
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   <wiki-category>ApCoCoA-1:Package_linbox</wiki-category>
 
</command>
 
</command>

Latest revision as of 10:11, 7 October 2020

This article is about a function from ApCoCoA-1.

LinBox.Det

Computes the determinant of a matrix.

Syntax

LinBox.Det(M:MAT):RAT, INT or ZMOD

Description

Please note: The function(s) explained on this page is/are using the ApCoCoAServer. You will have to start the ApCoCoAServer in order to use it/them.

This function returns the determinant of the square matrix M computed by the ApCoCoAServer using LinBox functions. Please note that in contrary to the built in CoCoA Det function the entries of M are only allowed to be of type RAT, INT or ZMOD. The resulting type depends on the types of the entries of the matrix.

  • @param M A square matrix whose components are either of type INT, RAT or ZMOD.

  • @return The determinant of A.

Example

Use R ::= QQ[x];
LinBox.Det(Mat([[1,2],[0,5]]));
-- CoCoAServer: computing Cpu Time = 0
-------------------------------
5
-------------------------------

Example

Use ZZ[x];
LinBox.Det(Mat([[1,2],[1,4]]));
-- WARNING: Coeffs are not in a field
-- GBasis-related computations could fail to terminate or be wrong

-------------------------------
-- WARNING: Coeffs are not in a field
-- GBasis-related computations could fail to terminate or be wrong
-- CoCoAServer: computing Cpu Time = 0
-------------------------------
2
-------------------------------

Introduction to CoCoAServer

LinAlg.Det

Det