bio | website | |
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location | Minneapolis | |
age | ||
visits | member for | 4 years, 11 months |
seen | Apr 14 at 23:20 | |
stats | profile views | 7,730 |
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.
Apr 9 |
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Proximal operator for the nuclear norm of Hamkel (x)
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Apr 9 |
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Locally nilpotent operators of the Weyl algebra
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Apr 9 |
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Integral closure of an ideal
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Apr 9 |
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Chen's Hyperchaotic system
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Mar 30 |
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Average probability that a random cosine polynomial with bernoulli coefficients is small
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Mar 30 |
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Average probability that a random cosine polynomial with bernoulli coefficients is small
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Mar 25 |
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Uninteresting questions with interesting answers
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Mar 25 |
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Uninteresting questions with interesting answers
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Mar 25 |
awarded | Notable Question |
Mar 25 |
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Uninteresting questions with interesting answers
Probably. @BenjaminSteinberg ${}\qquad{}$ |
Mar 24 |
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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 |
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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 |
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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 |
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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 |
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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 |