Home Online Manual
Top
Back: image
Forward: compareModules
FastBack:
FastForward:
Up: modules_lib
Top: Singular Manual
Contents: Table of Contents
Index: Index
About: About this document

D.4.17.25 Ker

Procedure from library modules.lib (see modules_lib).

Usage:
Ker(M); M a Matrix

Return:
Module, image of a Matrix N with image(N)=Ker(M)

Example:
 
LIB "modules.lib";
ring r;
matrix m[1][3]=x,y2,z3;
Matrix M=m;
M;
==>     {1}  {2}  {3}
==> {0}   x   y2   z3
==> 
Ker(M);
==> image | y2 z3 0   |
==>       | -x 0  z3  |
==>       | 0  -x -y2 |
==> 
==>