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 Jul21 awarded Yearling May20 awarded Nice Question May5 comment Optimal Strategy for Deal or No Deal Thanks Zev for fixing up the $signs. How do you get them to not make it go into LaTeX mode? May2 revised Optimal Strategy for Deal or No Deal tried to fix dollars signs from latex encoding Dec11 awarded Nice Question Dec8 revised Optimal Strategy for Deal or No Deal fixed up so auto-latexify doesn't happen on dollars signs Nov13 awarded Taxonomist Aug15 comment Is there a name for$[0,1]$? I'd imagine the 'unit interval' refers to the set [0,1], but you wouldn't say that the number 0.3 is a "unit interval number" in the same way that you might say that 2/3 is a "rational number". It's not entirely clear from the question but I think it's asking for a term to describe any number in the set, not to describe the set itself. Aug12 comment Interesting properties of ternary relations? Okay. That is interesting but it's not the type of property that I was after -- I want properties expressible in first order logic (+ identity). Aug7 comment Interesting properties of ternary relations? I'd be interested to hear some of those properties. The only one I can think of (off the top of my head) is R(x,y,z) <-> R(y,x,z). Aug3 comment Interesting properties of ternary relations? I'm now sure why you put that as a comment rather than as an answer. Aug3 asked Interesting properties of ternary relations? Aug3 comment How do the Properties of Relations work? Asymmetric does not mean "not symmetric" in the context of binary relations. The relation "x is a factor of y" is not symmetric (since 3 is a factor of 6 and not vice versa). But it is not asymmetric either by any standard definition of asymmetry. Jul30 accepted Characterising functions$f$that can be written as$f = g \circ g$? Jul30 accepted Are there any interesting semigroups that aren't monoids? Jul29 awarded Editor Jul29 comment Characterising functions$f$that can be written as$f = g \circ g$? @Qiaochu -- thanks for finding that for me. Could you put it as an answer to the question, optionally with a brief summary? Jul29 comment Characterising functions$f$that can be written as$f = g \circ g$? Thanks - fixed it. Jul29 revised Characterising functions$f$that can be written as$f = g \circ g$? fixed mistake in second example Jul29 asked Characterising functions$f$that can be written as$f = g \circ g\$?