TheOutZ's user avatar
TheOutZ's user avatar
TheOutZ's user avatar
TheOutZ
  • Member for 6 years, 4 months
  • Last seen this week
  • Germany
20 votes
1 answer
701 views

Strange behaviour of $x^2+5x+7$ under iteration

11 votes
1 answer
228 views

Non-$\zeta$ term of the sum $\sum\limits_{k = 1}^{\infty} \frac{H_k H_{k+m}}{k^2}$ for $m \in \mathbb{N}_0$

8 votes
0 answers
92 views

What number of group elements of a specific order are (non-)realisable?

6 votes
1 answer
763 views

Potential error in the paper: "Every positive integer is the sum of three palindromes"

6 votes
1 answer
402 views

Property of Markov chains when conditioning on zero-probability event

5 votes
3 answers
146 views

Closed form of the recursion formula for $\int_{0}^{1} \ln^r(1-x)x^n \, dx$

4 votes
1 answer
188 views

Egyptian unit decomposition + coverings of $\mathbb{Z}_P$ by arithmetic progressions

4 votes
0 answers
83 views

Entire non-constant function $f: \mathbb{C} \rightarrow \mathbb{C}$ such that $f(cz) = f(z)$ [duplicate]

4 votes
2 answers
106 views

Iterated polynomials modulo $p$ and divisibility properties

3 votes
1 answer
57 views

Integrating density over measurable sets yields probability?

2 votes
1 answer
101 views

Why is the matrix defined by $\left(\sum\limits_{k = -N}^{N}\exp(2\pi \textbf{i} k\frac{i-j}{M})\right)_{i,j=1,\ldots,M}$ of rank $2N+1$?

2 votes
2 answers
54 views

Analytic proof: $\frac{2}{t^2}-\frac{\frac{1}{2}\cos(\frac{t}{2})}{\sin^2(\frac{t}{2})} \geq 0$ for $t \in [0,\pi]$?

2 votes
2 answers
2k views

Proof of Cauchy-Schwarz inequality for conditional expectations

2 votes
2 answers
56 views

If $(X,Y)$, $(X',Y')$ are iid. real-valued RV, is $\mathbb{E}(X \cdot Y) = \mathbb{E}(X' \cdot Y')$?

2 votes
0 answers
134 views

Chain rule for matrix derivatives & multiplication of matrix with rank-3-tensor

2 votes
0 answers
68 views

Can the generating function $\sum_{n = 1}^{\infty} H_n^k z^n$ for $k \in \mathbb{N}$ generally be determined by special functions?

2 votes
1 answer
140 views

GAP: How to find a (possibly non-minimal) transitive representation of a group?

2 votes
1 answer
117 views

When does a finite (transitive) subgroup $G \leq S_n$ admit a "nice" resolvent invariant?

1 vote
1 answer
367 views

Mercer's theorem: Complex version

1 vote
2 answers
80 views

When is $\{x^2+y^k \mod n: x,y \in \mathbb{Z}/n\mathbb{Z}\} \neq \mathbb{Z}/n\mathbb{Z}$?

1 vote
1 answer
133 views

Irreducible polynomials for that each output is divisible by an integer n

1 vote
1 answer
226 views

Wedge Product: Vectors wedged with Multivectors? (Disclaimer: Music theory ahead)

1 vote
0 answers
42 views

How do I integrate a not necessarily differentiable multivariate (Riemann)-Stieltjes integral?

0 votes
2 answers
156 views

Does there exist a stochastic matrix $P$ such that $\ker(P-I)$ contains no nonnegative vector?

0 votes
1 answer
157 views

Piecewise differentiable version: Total variation expressed as an integral

0 votes
1 answer
54 views

Markov property and homogeneity for "arbitrary" measurable set left and right of condition

0 votes
1 answer
76 views

Show that $C(I)^n$ is a Banach space under the following norm

0 votes
2 answers
43 views

Integer polynomials with translation of the constant term - Are these examples unique?

0 votes
0 answers
37 views

Relationship between (complete) Bell polynomials and Harmonic numbers - alternative proof

-2 votes
1 answer
239 views

The axiom of regularity and "every element is also a set" [ZFC]