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Timeline for Doubly periodic 4 color theorem?

Current License: CC BY-SA 4.0

5 events
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May 1, 2020 at 18:24 history edited Ian Agol CC BY-SA 4.0
added 1573 characters in body
May 1, 2020 at 17:46 history edited Ian Agol CC BY-SA 4.0
changed k-set to k-factor (to agree with the more common terminology)
May 1, 2020 at 17:26 history edited Ian Agol CC BY-SA 4.0
added 10 characters in body
May 1, 2020 at 17:05 comment added Nate Thanks for detailed response! This is very similar to how I was thinking about the problem.
May 1, 2020 at 4:34 history answered Ian Agol CC BY-SA 4.0