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granular_bastard
  • Member for 4 years, 5 months
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18 votes
2 answers
549 views

PDF of volume of tetrahedron with random coordinates

13 votes
3 answers
972 views

Guessing number of colors of beads in an urn

11 votes
1 answer
621 views

Expected tetrahedron volume from normal distribution

11 votes
3 answers
895 views

Solve $\int _{x=0}^{\infty }\int _{t=-\infty }^{\infty }\exp \left(\frac{-a t^2+i b t}{3 t^2+1}+i t x\right)\frac{x}{3 t^2+1}\mathrm{d}t\mathrm{d}x$

10 votes
1 answer
448 views

PDF of area of triangle with normally-distributed coordinates in any dimensions

8 votes
1 answer
383 views

Solve $\int_{x=0}^{\infty}\int_{t=-\infty}^{\infty}\frac{x}{at^2+1}\text{exp}\left(itx-\frac{b \sqrt{3a}t^2}{at^2+1}\right)\mathrm{d}t\ \mathrm{d}x$

7 votes
1 answer
396 views

Expected triangle area of normal distributed vertices with colinear expectations

6 votes
3 answers
4k views

Least square fit of ellipse worsens with increasing border thickness

6 votes
1 answer
158 views

Renyi parking problem for finite intervals

5 votes
2 answers
275 views

Generalization of Gamma function

5 votes
1 answer
394 views

$\int_{-\infty}^{\infty} {\rm exp}\left(\frac{i b t - a}{t^2 + 1}\right) - {\rm exp}\left(\frac{i b}{t} - \frac{1}{t^2}\right) {\rm d}t$

5 votes
2 answers
437 views

$\int_{-\infty}^{\infty}\frac{1}{3 t^2+1} {\rm exp}\left(\frac{at^2+ibt}{3 t^2+1}+itx\right){\rm d}t$

5 votes
1 answer
383 views

Expected projected length of radial vectors of n-sphere

5 votes
1 answer
372 views

Relation between eigenvalues and size of geometrically shaped data in PCA

4 votes
2 answers
446 views

Sum with Digamma function expressed by hypergeometric function?

4 votes
1 answer
411 views

Volume of $n$-simplex in $\Bbb R^m$ without Cayley-Menger determinant

4 votes
1 answer
146 views

Probability distribution for birthday paradox

3 votes
3 answers
229 views

Product of $k$ factors as linear combination of linear combinations of its factors that are raised to the power of $k$

3 votes
2 answers
130 views

Geometrical meaning of $x^2+y^2+z^2-xy-xz-yz$

3 votes
3 answers
123 views

How to write sums of combinations of signed sums?

3 votes
3 answers
178 views

Parameter of ellipse in $\mathbb{R}^3$ derived from 2 planar projections

3 votes
1 answer
365 views

Probability density function of absolute sum of normal and uniform random variables

3 votes
3 answers
182 views

What type of curve is described by $\cos{x}+\cos{x}\cos{y}+\cos{y}=0$?

3 votes
1 answer
96 views

What type of curve is described by $4(\cos{x}+\cos{y})-6(\cos{2x}+\cos{2y})+8\cos{x}\cos{y}=7$?

3 votes
1 answer
266 views

Approximations of $\sum_{n=0}^\infty\frac{x^n}{n!}$ and $\sum_{n=0}^\infty\frac{x^n}{n!^2}$

3 votes
1 answer
195 views

Can an irregular tetrahedron be inscribed in a cuboid or prism?

3 votes
1 answer
251 views

Coordinates of a regular unit n-simplex

3 votes
3 answers
127 views

Triangle area from uniformly distributed points along a line

3 votes
1 answer
43 views

Looking for class of functions $f_n$ with $n$ variables $(x_1,...,x_n)$ and $f_n=k_n a^{n−1}$ if $x_i=a\;\forall i$

3 votes
1 answer
2k views

All connected subgraphs from adjacency matrix