Package sagbi/SB.GetCoeffRing

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This article is about a function from ApCoCoA-2.


This function returns the coefficient ring of a given subalgebra similar to the CoCoA function CoeffRing.


SB.GetCoeffRing(S: TAGGED("$apcocoa/sagbi.Subalgebra")): RING


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


Use R ::= QQ[x,y,z];
S := SB.Subalgebra(R,[x^2,y+z]);
PrintLn SB.GetCoeffRing(S);
-- QQ 

See also

Package sagbi/SB.Subalgebra

Package sagbi/SB.GetID

Package sagbi/SB.GetRing

Package sagbi/SB.GetGens

Package sagbi/SB.GetSAGBI

Package sagbi/SB.GetTruncSAGBI

Package sagbi/SB.GetTruncDeg

Package sagbi/SB.GetLTSA

Package sagbi/SB.GetInDeg

Package sagbi/SB.GetHS