Wikipedia:Reference desk/Archives/Mathematics/2016 February 10
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February 10[edit]
question in graph theory[edit]
Hi all,
Does each graph that its chromatic number is 7 contains at least 7 odd cycles, when no two cycles share edges?
Thanks a lot!! — Preceding unsigned comment added by 217.132.96.145 (talk) 16:36, 10 February 2016 (UTC)