Compares two magic squares according to Fr'{e}nicle's method.
Mnemonic is the old Fortran .GT. (for Greater Than)
comparison et seq.To compare magic square a
with magic square b
, their
elements are compared in rowwise order: a[1,1]
is compared with
b[1,1]
, then a[1,2]
with b[1,2]
, up to
a[n,n]
. Consider the first element that is different, say
[i,j]
. Then a if a[i,j].
The generalization to hypercubes is straightforward: comparisons are
carried out natural order.