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chausies
  • Member for 8 years, 2 months
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44 votes
4 answers
1k views

Paradox: Roots of a polynomial require less information to express than coefficients?

34 votes
2 answers
3k views

Hexagons are best for tiling 2D space in terms of perimeter vs area. What's best for 3D space?

28 votes
1 answer
984 views

Proof that the ratio between the logs of the product and LCM of the Fibonacci numbers converges to $\frac{\pi^2}{6}$

12 votes
1 answer
2k views

Test to determine if a polynomial has only real roots?

9 votes
2 answers
461 views

Are primes (ignoring $2$) equally likely to be $1~\text{or}~3\pmod 4$?

7 votes
1 answer
82 views

Solving $c A + I = (\det A) S$

7 votes
2 answers
135 views

At what rate do these common definitions converge to the constant $e=2.718...$?

5 votes
2 answers
276 views

Approximate LCM (Least Common Multiple) of $n$ random $k$-digit numbers

4 votes
1 answer
79 views

Couples are equally likely to have 1 or 2 children. How likely does a randomly chosen person have a sibling?

3 votes
1 answer
256 views

Given any polygon, find the smallest width that it could be squeezed through.

3 votes
0 answers
48 views

Rotating a 3D shape so that it gets heated evenly by a fire

3 votes
0 answers
48 views

Find matrix $S$ such that $diag(S)=d$ and $S^{-1}_{ij}=P_{ij}$ $\forall i \neq j$

3 votes
0 answers
413 views

Can origami math solve polynomial equations of degree greater than 3?

2 votes
1 answer
179 views

Solve $\frac{1}{x} = S x$, an equation that includes an element-wise inverse

2 votes
1 answer
291 views

Adapting gradient descent for numerical functional optimization?

2 votes
1 answer
345 views

Choosing which points/nodes to interpolate through?

2 votes
0 answers
284 views

How to parameterize the surface of a sphere such that the parameters are symmetric?

2 votes
0 answers
48 views

Is it the case that adjacent odd numbers being prime is statistically independent?

2 votes
0 answers
249 views

Dividing a sphere as evenly as possible

2 votes
1 answer
101 views

Rough average length for the hailstone sequence produced from $n$?

1 vote
0 answers
53 views

Distribution of the number of prime factors a large number $n$ has?

1 vote
0 answers
44 views

Is this smooth linear ramp function already a thing?

1 vote
0 answers
29 views

Penalty for an objective function to encourage "pigeon-holing"?

1 vote
2 answers
209 views

Given the period lengths for the orbits of $n$ different planets around the sun, how long until they all align?

1 vote
2 answers
97 views

What is a polytope/polyhedron with $O(n)$ vertices each with degree $O(\sqrt{n})$?

1 vote
1 answer
189 views

Stochastic Gradient Descent for iterated expectation?

1 vote
0 answers
41 views

What are two statements $A$ and $B$ such that $A \oplus B \Rightarrow A \land \neg B$?

1 vote
1 answer
67 views

Shooting sequence in shuffled Russian Roulette to remove advantage of going first?

1 vote
1 answer
2k views

Proof that the determinant of a Covariance matrix is equal to the determinant of the corresponding correlation matrix times the product of variances

1 vote
0 answers
125 views

Matrix calclulus: inverting a gradient by substitution