Timeline for Reasons for the importance of planarity and colorability?
Current License: CC BY-SA 2.5
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| Apr 13, 2017 at 12:58 | history | edited | CommunityBot |
replaced http://mathoverflow.net/ with https://mathoverflow.net/
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| Jan 21, 2011 at 14:45 | history | answered | Gil Kalai | CC BY-SA 2.5 |