Difference between revisions of "Package sagbi/SB.RandomPoly"
From ApCoCoAWiki
Andraschko (talk | contribs) (Created page with "{{Version|2}} <command> <title>SB.RandomPoly</title> <short_description>This function returns a random polynomial of a given subalgebra.</short_description> <syntax>S...") |
m (replaced <quotes> tags by real quotes) |
||
| Line 4: | Line 4: | ||
<short_description>This function returns a random polynomial of a given subalgebra.</short_description> | <short_description>This function returns a random polynomial of a given subalgebra.</short_description> | ||
| − | <syntax>SB.RandomPoly(S: TAGGED( | + | <syntax>SB.RandomPoly(S: TAGGED("$apcocoa/sagbi.Subalgebra"), d: INT): POLY</syntax> |
<description> | <description> | ||
This function computes a random polynomial of degree <tt>d</tt> from <tt>S</tt>. <par/> | This function computes a random polynomial of degree <tt>d</tt> from <tt>S</tt>. <par/> | ||
Latest revision as of 13:22, 29 October 2020
| This article is about a function from ApCoCoA-2. |
SB.RandomPoly
This function returns a random polynomial of a given subalgebra.
Syntax
SB.RandomPoly(S: TAGGED("$apcocoa/sagbi.Subalgebra"), d: INT): POLY
Description
This function computes a random polynomial of degree d from S.
Warning: Very inefficient!
@param S A subalgebra
@param d An integer
@return A random polynomial of degree d in the subalgebra S
Example
Use P ::= QQ[x,y,z]; S := SB.Subalgebra(CurrentRing,[x^2,y^2,x+y]); SB.RandomPoly(S,3); -- -2*x^3 -10*x^2*y +3*x*y^2 +11*y^3 +2*x^2 +4*x*y -4*y^2 +3*x +3*y -- (if you just started ApCoCoA)
See also
