June 2nd, 2015, 6:08 pm
The original (Olympiad) problem... did you mean coloring of the edge of the 2d disc (i.e, circle), or indeed the whole disc? (I've given up trying to solve the disc problem and Google search gave something similar but for the circle) ... and as stated the problem definitely does not have solution, as the center of the disk and its edge must be of different colors already ..
Last edited by
And2 on June 17th, 2015, 10:00 pm, edited 1 time in total.