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After doing nearly all the coursework for a Ph.D. in math, I then did all the coursework for a Ph.D. in statistics and completed that degree.

4h
revised Average probability that a random cosine polynomial with bernoulli coefficients is small
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4h
revised Average probability that a random cosine polynomial with bernoulli coefficients is small
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Mar
25
revised Uninteresting questions with interesting answers
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Mar
25
revised Uninteresting questions with interesting answers
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Mar
25
awarded  Notable Question
Mar
25
comment Uninteresting questions with interesting answers
Probably. @BenjaminSteinberg ${}\qquad{}$
Mar
24
comment Uninteresting questions with interesting answers
@ToddTrimble : My posting says, in the first sentence in the second paragraph "Doubtless it's an interesting problem, to those who are interested in that sort of thing; otherwise Hilbert would not have included it in his list." That says it. But I was saying that even those who take no particular interest in that sort of thing can find Matiyasevich's theorem interesting because of the surprising nature of the result: that there are no semi-decidable sets except diophantine sets.
Mar
24
comment Uninteresting questions with interesting answers
@Ryan : I don't think it's a precise definition with "may". And I state explictly in my posting that a set is decidable if and only if both it and its complement are semi-decidable, so that makes it clear if it weren't already that every decidable set is semi-decidable. That all decidable sets are semi-decidable is an easy exercise. ${}\qquad{}$
Mar
24
awarded  Good Question
Mar
24
comment Uninteresting questions with interesting answers
There is also a Wikipedia article, originally created by me: en.wikipedia.org/wiki/Proof_that_22/7_exceeds_%CF%80 ${}\qquad{}$
Mar
24
comment Uninteresting questions with interesting answers
@BenjaminSteinberg : OK, so your point is simply to agree with my second paragraph?
Mar
24
answered Uninteresting questions with interesting answers
Mar
24
comment Uninteresting questions with interesting answers
There seem to be lots of problems in geometry, including this one, and the one in my posted question and the napkin ring problem, and others that escape me at the moment, that seem essentially the same as each other in all respects except the specifics. ${}\qquad{}$
Mar
24
revised Uninteresting questions with interesting answers
fixing a typo
Mar
24
awarded  Popular Question
Mar
24
awarded  Nice Question
Mar
24
comment Uninteresting questions with interesting answers
That one actually crossed my mind while I pondered this question, but at the moment of posting it I had forgotten it. ${}\qquad{}$
Mar
24
revised Uninteresting questions with interesting answers
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Mar
24
asked Uninteresting questions with interesting answers
Mar
23
comment why is it so cool to square numbers? (in terms of finding the standard deviation)
@Avicenna : I think your comment is silly. Obviously the sum of all deviations from the mean is zero. The obvious alternative to squaring the deviations is not just leaving them alone; it's taking their absolute values, since those are the distances from the observations to the mean.