Package sagbi/SB.IsInToricRing
From ApCoCoAWiki
| This article is about a function from ApCoCoA-2. |
SB.IsInToricRing
This function checks whether a given polynomial is in a toric subalgebra.
Syntax
SB.IsInToricRing(f: RINGELEM, S: TAGGED("$apcocoa/sagbi.Subalgebra")): BOOL
Description
This function takes a polynomial f and a subalgebra S generated by a set of terms and checks whether f is a toric ring.
@param f A polynomial
@param S A subalgebra of RingOf(f)
@return true if f is an element of S and false otherwise.
Example
Use R ::= QQ[x,y,z]; S := SB.Subalgebra(R,[x^2,x*y,y*z]); f := x^5*y^3*z^2 + x^4*y^2*z^2; SB.IsInToricRing(f,S); -- true
See also
Package sagbi/SB.IsInSubalgebra
Package sagbi/SB.IsInSubalgebra_SAGBI
