Home Online Manual
Top
Back: monomialideal_lib
Forward: minbaseMon
FastBack: modstd_lib
FastForward: mprimdec_lib
Up: monomialideal_lib
Top: Singular Manual
Contents: Table of Contents
Index: Index
About: About this document

D.4.13.1 isMonomial

Procedure from library monomialideal.lib (see monomialideal_lib).

Usage:
isMonomial (I); I ideal.

Return:
1, if I is monomial ideal; 0, otherwise.

Assume:
I is an ideal of the basering.

Example:
 
LIB "monomialideal.lib";
ring R = 0,(w,x,y,z,t),lp;
ideal I = w^3*x*y, w^2*x^2*y^2*z^2 - y^3*z+x^4*z^4*t^4, w*x*y*z*t - w*x^6*y^5*z^4, x^2*z^4*t^3 , w^6*y^4*z^2 + x^2*y^2*z^2;
isMonomial(I);
==> 1
ideal J = w^3*x*y + x^3*y^9*t^3, w^2*x^2*y^2*z^2 - y^3*z, w*x*y*z*t - w*x^6*y^5*z^4, x^2*z^4*t^3 + y^4*z^4*t^4, w^6*y^4*z^2 + x^2*y^2*z^2;
isMonomial(J);
==> 0