Wikipedia:Reference desk/Archives/Mathematics/2016 February 10

= February 10 =

question in graph theory
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)