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D.4.17.21 Degrees

Procedure from library modules.lib (see modules_lib).

Usage:
Degrees(M); M a Module

Return:
list, grading of the Module

Example:
 
LIB "modules.lib";
ring r;
matrix ma[2][2]=x,y,x,y;
Matrix m=ma;
Module M=image(m);
M;
==> image | x y |
==>       | x y |
==> 
==> 
Degrees(M);
==> [1]:
==>    1
==> [2]:
==>    1

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