About random matrices:
Random integer matrices. With no arguments, the majority of the entries
are -1 and 1, never zero, and rarely "large." ::
sage: random_matrix(ZZ, 5, 5)
[ -8 2 0 0 1]
[ -1 2 1 -95 -1]
[ -2 -12 0 0 1]
[ -1 1 -1 -2 -1]
[ 4 -4 -6 5 0]
"Never zero", but even the given example has zeros. A bug, or maybe I
don't quite understand this.
-- Jori Mäntysalo
