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Nov 4, 2011 at 22:56 answer added Alfredo Hubard timeline score: 6
Nov 4, 2011 at 21:33 answer added Igor Rivin timeline score: 3
Nov 4, 2011 at 21:28 comment added Igor Rivin It might help if you made some comments about where the problem comes from. My guess is that it is not particularly tractable algorithmically.
Nov 4, 2011 at 20:36 comment added Barry Cipra At the risk of sending you on a 200-page wild goose chase, I'd suggest taking a look at Joe Gallian's Dynamic Survey of Graph Labeling, combinatorics.org/Surveys/ds6.pdf
Nov 4, 2011 at 20:09 history asked Alireza Abdollahi CC BY-SA 3.0