isTriangular F
isTriangular A
A polynomial system is triangular if, after a monomial change of coordinates, there is a proper subset of $k$ equations which involve only the first $k$ variables. This function checks whether a polynomial system (or set of supports) is triangular.
The function isTriangular accepts a list of polynomials forming a system.



The function isTriangular also accepts a list of supports encoded as matrices.




The object isTriangular is a method function.