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Jul 29, 2013 at 3:30 comment added Manfred Weis @masked avenger: two coloring is indeed a good way of attacking the problem; I have already played around with some methods and also devised my own (skip-coloring), but as they do not address the very essence of the problem (namely the existence of odd cycles), I currently don't follow that thread. If you like, I can share my ideas for two-coloring approaches.
Jul 29, 2013 at 0:01 history answered The Masked Avenger CC BY-SA 3.0