A103314 conjecture

[Paul C. Leopardi]

See below.
On Fri, 20 May 2005 11:14 am, Paul C. Leopardi wrote:
> David,
> My comments below.
> Best, Paul Leopardi
>
> On Fri, 20 May 2005 02:55 am, David Wilson wrote:
> > Right now, I am inclined to believe that if S is a zero-sum subset of the
> > nth roots of 1, that n can be built up from (zero-sum) cyclically
> > balanced subsets via the following operations:
> >
> > 1.  A U B, where A and B are disjoint.
> > 2.  A - B, where B is a subset of A.

Also, by your point 2, I assume that you require that B be a zero-sum subset 
of A, not just any subset, but that B need not be "cyclically balanced". 
Is this correct?