CodeNorm( code )
CodeNorm
returns the norm of code.
The norm of a code is defined as
the minimum of the norms for the respective
coordinates of the code.
In effect, for each coordinate CoordinateNorm
is called, and the minimum of the calculated
numbers is returned.
gap> CodeNorm( HammingCode( 3, GF(2) ) ); 3
GAP 3.4.4