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seen Sep 5 at 18:51

Feb
9
revised Why can a Venn diagram for 4+ sets not be constructed using circles?
added 20 characters in body
Feb
9
comment Why can a Venn diagram for 4+ sets not be constructed using circles?
Given that it is an MAA journal (nonprofit organization) I don't mind and I doubt anyone would. Still they do own the copyright, so this it not a trivial question. But I won't worry about it.
Feb
9
answered Why can a Venn diagram for 4+ sets not be constructed using circles?
Jan
6
awarded  Necromancer
Dec
9
comment Fractional chromatic number of fullerenes
Checking over my database I found that 3 of the 100-200 fullerenes I examined did not have 5/2... So this is intriguing. If your proof, Angela, holds water, then there will be something funny about these 3 cases. I double-checked with others that my fractional chi is correct on these 3. Example:
Dec
9
awarded  Supporter
Dec
5
comment Fractional chromatic number of fullerenes
The ones I checked are up to 50 vertices. I am told that perhaps things don't get interesting until they are much larger, so maybe there is nothing to this "conjecture" about 5/2.
Dec
2
awarded  Student
Dec
2
asked Fractional chromatic number of fullerenes
Nov
26
answered Banach-Tarski Paradox for the unit interval?
Nov
21
answered how to find this generating function
Nov
18
answered 4-Color Theorem on Surfaces
Nov
14
awarded  Nice Answer
Sep
8
answered An algorithm for making conditionally convergent series take arbitrary values?
Aug
11
answered Is $SO_2$ an amenable group?
Aug
11
awarded  Teacher
Aug
11
answered Reference about the Banach-Tarski paradox