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D.15.11.27 addModules

Procedure from library modules.lib (see modules_lib).

Usage:
addModules(M,N); or M+N; M and N Modules

Return:
Module, sum of the two Modules

Example:
 
LIB "modules.lib";
ring r;
matrix ma[2][2]=x,y,x2,y2;
Matrix m=ma;
Module M=image(m);
matrix na[2][2]=xy,x2,y2,x;
Matrix n=na;
Module N=image(na);
M;
==> image | x  y  |
==>       | x2 y2 |
==> 
==> 
N;
==> image | xy x2 |
==>       | y2 x  |
==> 
==> 
N+M;
==> image | xy x2 x  y  |
==>       | y2 x  x2 y2 |
==> 
==>