Mark Eichenlaub
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 Jan 31 awarded Nice Answer Jan 31 answered Find five positive integers whose reciprocals sum to $1$ Nov 29 revised What's the expected value of a lottery ticket? spelling, minor edit Nov 29 accepted What's the expected value of a lottery ticket? Nov 29 suggested approved edit on What's the expected value of a lottery ticket? Nov 29 comment What's the expected value of a lottery ticket? @cardinal I hadn't thought of it that way, but it's a good point and looks right to me, thanks. Nov 29 comment What's the expected value of a lottery ticket? @FlybyNight $n$ is a random variable whose distribution is determined from $p$ and $t$. I believe you do have enough information. Nov 29 awarded Critic Nov 29 asked What's the expected value of a lottery ticket? Nov 9 accepted Can there be a cubical bubble? Nov 9 awarded Yearling Jul 10 awarded Nice Answer Jun 8 awarded Nice Answer Mar 12 accepted Why can't we interchange differentiation with taking a limit of a series of functions? Feb 20 awarded Nice Answer Feb 13 comment Singing Bird Problem @BrianM.Scott Yes, you're right, thanks. Tried a new answer. Feb 13 revised Singing Bird Problem added 288 characters in body Feb 13 answered Singing Bird Problem Jan 30 awarded Necromancer Jan 22 comment Can there be a cubical bubble? @Rahul Ah, now I see. What I meant is that the performer made a roughly cubical compartment, but it is not perfect. I wanted to know if a perfect cube was mathematically possible, or whether, for example, the corners would always be a little rounded off.