Markus Sigg

activity

20182023

collaborators

3 papers

math.CO2023

A note on OEIS sequence A111384

Markus Sigg

$A 111384 (n)$ is an upper bound for the number of primes that can be written as a sum of three distinct primes selected from a set of $n$ primes. Is this bound sharp?

math.GM2020

On the cluster structures in Collatz level sets

Markus Sigg

The cluster structures that can be observed in the first few level sets of the Collatz tree are maintained through all its levels, provided that the orbit steadiness \[ \prod_{\sub…

math.CO2018

Gasper's determinant theorem, revisited

Markus Sigg

Let $n \geq 2$ be a natural number, $M$ a real $n \times n$ matrix, $s$ the sum of the entries of $M$ and $q$ the sum of their squares. With $α := s / n$ and $β := q / n$ , Gasper's determ…