F. Halter-Koch

collaborators

2 papers

math.NT2024

P-adic approximation of algebraic integers and residue class rings of rings of integer-valued polynomials

Sophie Frisch, Franz Halter-Koch

Let F:K be a Galois extension of number fields and Q a prime ideal of O_F lying over the prime P of O_K. By analyzing the Q-adic closure of O_K in O_F we characterize those rings o…

math.NT2022

On monoids of weighted zero-sum sequences and applications to norm monoids in Galois number fields and binary quadratic forms

Alfred Geroldinger, Franz Halter-Koch, Qinghai Zhong

Let $G$ be an additive finite abelian group and $Γ \subset End (G)$ be a subset of the endomorphism group of $G$ . A sequence $S = g_{1} \cdot \dots \cdot g_{ℓ}$ ove…