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Dan Fox's user avatar
Dan Fox
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47
Have you ever seen this bizarre commutative algebra?
Dec 24, 2018
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30
When is a closed differential form harmonic relative to some metric?
Sep 11, 2011
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24
Which mathematical ideas have done most to change history?
Apr 13, 2011
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22
Why is there no symplectic version of spectral geometry?
Oct 20, 2017
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Which great mathematicians were also historians of mathematics?
Feb 12, 2021
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Nonequivalent definitions in Mathematics
Nov 24, 2017
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"Famous" 2d Riemannian manifolds with non-constant curvature
Apr 29, 2011
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Research-only permanent positions worldwide
Jun 26, 2017
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Real orthogonal and sign
Jul 19, 2019
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"Noncommutative heat equation" -- a strange generalization of Killing vectors for a flat metric
Dec 1, 2010
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Determinant of a non-square matrix
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Dismissed from PhD due to disability-related misconduct: how to answer question about dismissal?
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Should I simply ignore it if authors assume that I'm male in their response to my review of their article?
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Explaining the order of negative integers
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Is there a fair way to increase the grade of students who did not do well in exams?