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Jul 7, 2012 at 18:56 comment added porton A more difficult question continuing this trend: mathoverflow.net/questions/101576/…
Jul 5, 2012 at 22:03 vote accept porton
Jul 5, 2012 at 21:57 answer added Noah Stein timeline score: 4
Jul 5, 2012 at 21:47 comment added porton @Hugh Denoncourt: We should feed only values arising as a $\times^C$ product of some binary relations $f$ and $g$ (It seems that there are values which $f\times^C g$ cannot take. We don't consider these values.) Once more: We know $f\times^C g$ and that it is non-empty. We need to infer $f$ and $g$.
Jul 5, 2012 at 21:37 comment added Hugh Denoncourt When you say, "knowing only the value of $f \times^C g$", do you mean you can feed any binary relation into this construction and you'll know the resulting binary relation?
Jul 5, 2012 at 21:24 history asked porton CC BY-SA 3.0