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Semiclassical
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60
Fun Geometric Series Puzzle
Jul 20, 2014
39
Are most rational quintics unsolvable?
Nov 11, 2014
38
Why is $\sum_{n=-\infty}^{\infty}\exp(-(x+n)^2)$ "almost" constant?
Aug 9, 2014
33
Find a conformal map from semi-disc onto unit disc
Jul 30, 2014
26
Minimal value of $\sum_{1\leq i<j\leq 2014}a_ia_j$ where $a_i=\pm1$
May 23, 2016
25
What is the surface area of the 3-dimensional elliptope?
Jan 10, 2019
24
A certain “harmonic” sum
Jul 31, 2014
23
How many lists of 100 numbers (1 to 10 only) add to 700?
Sep 10, 2014
21
Antisymmetry in integral $I(s)=-I(1/s)=\int_0^1 \frac{\ln\left[x^s+(1-x)^{s}\right]}x dx $
Dec 9, 2015
20
How to find explicit formula for two recursions?
Jun 13, 2016

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16
Early history of the phase concept in the physical sciences
11
Distribution of zeroes of lacunary functions
11
Definition of WignerD function?
9
Behavior of a Baker-Campbell-Hausdorff problem at infinity
7
Groupoid cardinality and Egyptian fraction representations of 1