Stefan Steinerberger

activity

20242026

collaborators

Showing math.DSShow all

2 papers · 1 filter

math.DS2025

Superpolynomial convergence in the Riemann Rearrangement Theorem

Stefan Steinerberger

Let $x \in R$ be arbitrary and consider the `greedy' approximation of $x$ by signed harmonic sums: given $a_{n} = \sum_{k \leq n} ε_{k} / k$ with $\varepsilon_k \in \l…

math.DS2024

A curious dynamical system in the plane

Stefan Steinerberger, Tony Zeng

For any irrational $I^\pm > 0$ and any initial value $z_{- 1} \in C$ , we define a sequence of complex numbers $(z_{n})_{n = 0}^{\infty}$ as follows: $z_{n}$ is $z_{n-1} + e^{2 Ïi Î±…