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May
4
comment How to integrate $\frac{1}{\sqrt{x^2+y^2+z^2}}$
@Francesco, your spherical coordinate convention might just be different from the OP's.
May
3
comment Are all mathematicians human calculators?
@Mariano, Gauss did numerical analysis by hand, but of course he did not have computers, and we can't really say now if he's sane. :) On my part: I could do numerics by hand, but why should I bother?
May
3
revised What do these variables in the generic BBP formula mean?
edited tags
May
3
revised A generalization of Bell numbers to arbitrary complex arguments
edited tags
May
3
comment A generalization of Bell numbers to arbitrary complex arguments
A related question. As I noted in the answer to the other question, one might consider using Cauchy's differentiation formula with an appropriate contour for numerical explorations. This is similar to the approach I made to generalize the partition numbers.
May
3
revised Is $K\left(\frac{\sqrt{2-\sqrt3}}2\right)\stackrel?=\frac{\Gamma\left(\frac16\right)\Gamma\left(\frac13\right)}{4\ \sqrt[4]3\ \sqrt\pi}$
added 2 characters in body
May
3
comment Invertible skew-symmetric matrix
To jump a bit forward: odd-order skew-symmetric matrices are necessarily singular, but even-order ones don't have to be.
May
3
comment Handling complex arguments of elliptic integrals in Maple
Most CAS suck at producing useful elliptic integral expressions. You might want to look at Byrd/Friedman and see if your particular form is in there.
May
3
revised Handling complex arguments of elliptic integrals in Maple
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May
3
revised An identity involving Bernoulli and Stirling numbers
edited tags; edited title
May
3
comment An identity involving Bernoulli and Stirling numbers
See the first formula in page 133 of this paper; the proof of the associated theorem is in previous pages.
May
2
revised Compute the following sum
added 9 characters in body
May
2
revised Determinant of a otherwise constant matrix with a constant diagonal
added 70 characters in body; edited tags
May
2
revised Compute the following sum
edited tags; edited tags
May
2
revised Writing triangular function as a piecewise function
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May
2
awarded  Revival
May
2
revised Diagonal factorization of upper triangluar matrix to unit uppper triangular matrix
edited tags
May
2
comment Diagonal factorization of upper triangluar matrix to unit uppper triangular matrix
Consider forming a diagonal matrix from the diagonal elements of your upper triangular matrix, and see what happens if you premultiply the inverse of this diagonal matrix to your triangular matrix.
May
2
revised Derivatives of the Struve functions $H_\nu(x)$, $L_\nu(x)$ and other related functions w.r.t. their index $\nu$
typo
May
2
comment How to put 9 pigs into 4 pens so that there are an odd number of pigs in each pen?
Made my day. Thanks for the giggles!