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Jun 13, 2016 at 13:54 history edited Ian Calvert CC BY-SA 3.0
Error in first edit, original correct.
Jun 13, 2016 at 12:08 review Close votes
Jun 21, 2016 at 10:33
Jun 13, 2016 at 11:59 comment added Ian Calvert The intersection of two 3-convex sets, X and Y, is 6 convex i.e. for every six points in the set intersection at least one of fifteen associated line segments lies in both sets , by Ramsey's theorem.
Jun 13, 2016 at 11:50 comment added Alex Degtyarev In what sens the intersection of two sets is $6$ or $5$?
Jun 13, 2016 at 11:44 history edited Ian Calvert CC BY-SA 3.0
deleted 2 characters in body
Jun 13, 2016 at 11:22 history asked Ian Calvert CC BY-SA 3.0