NullMat( m, n )
NullMat( m, n, F )
NullMat returns the null matrix with m rows and n columns over the
field F. If no field is given, NullMat returns the null matrix over
the field of rationals. Each call to NullMat returns a new matrix, so
it is safe to modify the result.
gap> PrintArray( NullMat( 2, 3 ) );
[ [ 0, 0, 0 ],
[ 0, 0, 0 ] ]
gap> PrintArray( NullMat( 2, 2, GF(2) ) );
[ [ 0*Z(2), 0*Z(2) ],
[ 0*Z(2), 0*Z(2) ] ]
GAP 3.4.4