Top
Back: freerank
Forward: lcm
FastBack: inout_lib
FastForward: random_lib
Up: poly_lib
Top: Singular Manual
Contents: Table of Contents
Index: Index
About: About this document

D.2.6.5 is_zero

Procedure from library poly.lib (see poly_lib).

Usage:
is_zero(M[,any]); M=poly/ideal/vector/module/matrix

Return:
integer, 1 if coker(M)=0 resp. 0 if coker(M)!=0, where M is considered as matrix.
If a second argument is given, return a list:
L[1] = 1 if coker(M)=0 resp. 0 if coker(M)!=0
L[2] = dim(M)

Example:
 


Top Back: freerank Forward: lcm FastBack: inout_lib FastForward: random_lib Up: poly_lib Top: Singular Manual Contents: Table of Contents Index: Index About: About this document
            User manual for Singular version 3-1-6, Dec 2012, generated by texi2html.