Maximum social distancing of $n\geq2$ aliens on a planet of radius $R$
118116
Maximum total distance between points on a sphere
138601
There are $2n+1$ people. For each $n$ people there is somebody who is friend with each of them. Prove there is a "know-them-all" person.
21430
Uniform distribution on the surface of unit sphere
118883
If $\lambda_{max} = n$, then $n\times n$ positive, reciprocal matrix A is consistent
123941
Maximum theoretical data density
20775
Distribution of orbital velocities in a disk galaxy for N-body simulation?
129721
Expected value of the distance between 2 uniformly distributed points on circle
94004
Boundedness of general relativity Hamiltonian
127032
Maximum of $\cos \alpha_{1}\cdot \cos \alpha_{2}\cdot \cos \alpha_{3}....\cos \alpha_{n}.$
148361
Localization and direct limit
24036
extended stars-and-bars problem(where the upper limit of the variable is bounded)
157750
A reverse birthday problem: no pair out of 1 million aliens shares a birthday; what is their year length?
149191
When does the $n$th bound state of a 1D quantum potential have $n$ maxima/minima?
22873
Integrating radial free fall in Newtonian gravity
14164
Proving that 1- and 2-d simple symmetric random walks return to the origin with probability 1
130896
Minimal Sufficient Statistic for location family
57667
Escape velocity from Earth