Mersenne: Re: Spin Structures on Riemann Surfaces

[Benny.VanHoudt]

Ernst W. Mayer wrote:

>If an odd number N has a factor F < N, then N can be expressed as the sum of F
>consecutive integers, as follows: Let Q = N/F and D = (F-1)/2, then
>
>N = (Q-D) + (Q-D+1) + ... + Q + ... + (Q+D-1) + (Q+D).

I guess, its F that has to be odd and not N.

Benny.