English

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

Number Theory 2022-08-24 v2 Commutative Algebra Combinatorics

Abstract

Let GG be an additive finite abelian group and ΓEnd(G)\Gamma \subset \operatorname{End} (G) be a subset of the endomorphism group of GG. A sequence S=g1gS = g_1 \cdot \ldots \cdot g_{\ell} over GG is a (Γ\Gamma-)weighted zero-sum sequence if there are γ1,,γΓ\gamma_1, \ldots, \gamma_{\ell} \in \Gamma such that γ1(g1)++γ(g)=0\gamma_1 (g_1) + \ldots + \gamma_{\ell} (g_{\ell})=0. We construct transfer homomorphisms from norm monoids (of Galois algebraic number fields with Galois group Γ\Gamma) and from monoids of positive integers, represented by binary quadratic forms, to monoids of weighted zero-sum sequences. Then we study algebraic and arithmetic properties of monoids of weighted zero-sum sequences.

Keywords

Cite

@article{arxiv.2202.12054,
  title  = {On monoids of weighted zero-sum sequences and applications to norm monoids in Galois number fields and binary quadratic forms},
  author = {Alfred Geroldinger and Franz Halter-Koch and Qinghai Zhong},
  journal= {arXiv preprint arXiv:2202.12054},
  year   = {2022}
}

Comments

To appear in Acta Math. Hungar