Difference between revisions of "Package sagbi/SB.GetCoeffRing"
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<short_description>This function returns the coefficient ring of a given subalgebra similar to the CoCoA function <tt>CoeffRing</tt>.</short_description> | <short_description>This function returns the coefficient ring of a given subalgebra similar to the CoCoA function <tt>CoeffRing</tt>.</short_description> | ||
| − | <syntax>SB.GetCoeffRing(S: TAGGED( | + | <syntax>SB.GetCoeffRing(S: TAGGED("$apcocoa/sagbi.Subalgebra")): RING</syntax> |
<description> | <description> | ||
Takes a subalgebra <tt>S</tt> of a polynomial ring <tt>R</tt> and returns the coefficient ring of <tt>R</tt> | Takes a subalgebra <tt>S</tt> of a polynomial ring <tt>R</tt> and returns the coefficient ring of <tt>R</tt> | ||
Latest revision as of 13:20, 29 October 2020
| This article is about a function from ApCoCoA-2. |
SB.GetCoeffRing
This function returns the coefficient ring of a given subalgebra similar to the CoCoA function CoeffRing.
Syntax
SB.GetCoeffRing(S: TAGGED("$apcocoa/sagbi.Subalgebra")): RING
Description
Takes a subalgebra S of a polynomial ring R and returns the coefficient ring of R
@param S A subalgebra
@return the coefficient ring of S
Example
Use R ::= QQ[x,y,z]; S := SB.Subalgebra(R,[x^2,y+z]); PrintLn SB.GetCoeffRing(S); -- QQ
See also
Package sagbi/SB.GetTruncSAGBI
