Top
Back: inForm
Forward: bFactor
FastBack: dmod_lib
FastForward: freegb_lib
Up: dmodapp_lib
Top: Singular Manual
Contents: Table of Contents
Index: Index
About: About this document
7.7.4.0. isFsat
Procedure from library dmodapp.lib (see dmodapp_lib).

Usage:
isFsat(I, F); I an ideal, F a poly

Return:
int

Purpose:
check whether the ideal I is F-saturated

Note:
1 is returned if I is F-saturated, otherwise 0 is returned.
we check indeed that Ker(D --F--> D/I) is (0)

Example:
 
LIB "dmodapp.lib";
ring r = 0,(x,y),dp;
poly G = x*(x-y)*y;
def A = annfs(G);
setring A;
poly F = x3-y2;
isFsat(LD,F);
==> 1
ideal J = LD*F;
isFsat(J,F);
==> 0


Top Back: inForm Forward: bFactor FastBack: dmod_lib FastForward: freegb_lib Up: dmodapp_lib Top: Singular Manual Contents: Table of Contents Index: Index About: About this document
            User manual for Singular version 3-1-1, Feb 2010, generated by texi2html.