Revision history [back]
 | 1 | initial version |
Notice the difference
sage: B = Matrix(ZZ, [[1,0,0],[1,-1,1],[0,0,2]])
sage: MatrixGroup([B])
Traceback (most recent call last):
...
ValueError: each generator must be an invertible matrix
versus
sage: B = Matrix(QQ, [[1,0,0],[1,-1,1],[0,0,2]])
sage: MatrixGroup([B])
Matrix group over Rational Field with 1 generators (
[ 1 0 0]
[ 1 -1 1]
[ 0 0 2]
)
