|
 |
 |
 |
 |
 |
 |
 |
 |
 |
D.3.1.14 unitmat
Procedure from library matrix.lib (see matrix_lib).
- Usage:
unitmat(n); n integer >= 0
- Return:
nxn unit matrix
- Note:
needs a basering, diagonal entries are numbers (=1) in the basering
Example:
LIB "matrix.lib"; ring r=32003,(x,y,z),lp; print(xyz*unitmat(4)); → xyz,0, 0, 0, → 0, xyz,0, 0, → 0, 0, xyz,0, → 0, 0, 0, xyz print(unitmat(5)); → 1,0,0,0,0, → 0,1,0,0,0, → 0,0,1,0,0, → 0,0,0,1,0, → 0,0,0,0,1 |