deant
Joined: 12 Jul 2010, 07:44 Posts: 154

Re: Exercise [16.05]
By the way, strictly speaking the marks around the outside of the magic disk represent elements of the projective plane of F2, not elements of F2 x F2 x F2.
However, since the only elements of F2 are 0 and 1, there is only one representation for a given ratio (or set of ratios) of values; and so the projective nspace Pn(F2) is pointforpoint identical to the vector space (F2)^(n+1) with the origin excluded (for any n>0).
This is not true for any other finite group Fp, p>2.
