Semiclassical

Minneapolis, MN

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Are most rational quintics unsolvable?

reference-request polynomials galois-theory asked Nov 11, 2014 at 21:04

math.stackexchange.com

25 votes

What is the surface area of the 3-dimensional elliptope?

multivariable-calculus definite-integrals analytic-geometry closed-form spectrahedra asked Jan 10, 2019 at 14:59

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20 votes

Why is this definite integral antisymmetric in $s\mapsto s^{-1}$?

calculus definite-integrals closed-form symmetry asked Dec 9, 2015 at 21:22

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18 votes

What is the Riemann surface of $y=\sqrt{z+z^2+z^4+\cdots +z^{2^n}+\cdots}$?

complex-analysis power-series riemann-surfaces analyticity asked Aug 5, 2014 at 1:31

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18 votes

Which power means are constructible?

geometry geometric-construction means asked Aug 15, 2014 at 14:40

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12 votes

Does the functional equation $p(x^2)=p(x)p(x+1)$ have a combinatorial interpretation?

combinatorics polynomials generating-functions alternative-proof combinatorial-proofs asked Mar 1, 2016 at 15:21

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12 votes

Early history of the phase concept in the physical sciences

reference-request material-science thermodynamics asked Oct 29, 2014 at 14:16

hsm.stackexchange.com

11 votes

Constructing a family of distinct curves with identical area and perimeter

analytic-geometry examples-counterexamples plane-curves asked Jul 25, 2014 at 0:51

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11 votes

Distribution of zeroes of lacunary functions

cv.complex-variables analytic-continuation lacunary-series asked Aug 14, 2014 at 15:50

mathoverflow.net

10 votes

Smoothness of $\frac12[W_0(x)+W_{-1}(x)]$ for real $x<0$

calculus complex-analysis analyticity lambert-w branch-cuts asked Aug 2, 2017 at 19:14

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Top Answers

Fun Geometric Series Puzzle

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Why is $\sum_{n=-\infty}^{\infty}\exp(-(x+n)^2)$ "almost" constant?

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Find a conformal map from semi-disc onto unit disc

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Minimal value of $\sum_{1\leq i<j\leq 2014}a_ia_j$ where $a_i=\pm1$

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A certain “harmonic” sum

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How many lists of 100 numbers (1 to 10 only) add to 700?

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How to find explicit formula for two recursions?

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Why did the integral eat the pi?

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Short proof for the determinant of a $4$ by $4$ matrix

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A series with only rational terms for $\ln \ln 2$

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If $(a, b,c)$ is a Pythagorean triple with $b, c$ consecutive integers then $c \mid a^b – 1$, proof/disproof?

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Why does this infinite series equal one? $\sum_{k=1}^\infty \binom{2k}{k} \frac{1}{4^k(k+1)}=1$

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Find Orthogonal Vectors in 4-Dimensions

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Solving for matrices $A$ and $B$

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What are some conceptualizations that work in mathematics but are not strictly true?

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Prove $_2F_1\left(\frac13,\frac13;\frac56;-27\right)\stackrel{\color{#808080}?}=\frac47$

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How many distinct ways to climb stairs in 1 or 2 steps at a time? (Fibonacci puzzle)

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Proof without words: $1+8\times\text{triangular number}$ is an odd perfect square

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Difficult infinite integral involving a Gaussian, Bessel function and complex singularities

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How to solve a system of three nonlinear equation in a simple way

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Is the non-existence of a general quintic formula related to the impossibility of constructing the geometric median for five points?

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Wronskian relation of modified Bessel functions

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Challenge: How to prove this reduction identity for factorials of even numbers?

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On completing the square and symmetry

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Find the rightmost digit of: $1^n+2^n+3^n+4^n+5^n+6^n+7^n+8^n+9^n$

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How to solve this recurrence Relation - Varying Coefficient

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Applications of Algebra in Physics

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A probabilistic integral $\int_{-\infty}^{\infty}e^{-x^2/2\sigma^2}\arcsin\left(1-2\left|\lfloor x\rceil-x\right|\right)\,dx$

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How to solve $e^x=x$?

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Solution of Definite integral:$\int_{-\infty}^{\infty} \int_{-\infty}^{\infty} \frac{1}{\sqrt{x^{2}+y^{2}+z^{2}}}e^{i(k_{1}x+k_{2}y)}dxdy$

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