English

Generalized independence

Logic 2023-02-20 v1

Abstract

We explore different generalizations of the classical concept of independent families on ω\omega following the study initiated by Fisher and Montoya. We show that under (κ)\diamondsuit^*(\kappa) we can get strongly independent families on κ\kappa of size 2κ2^\kappa and present an equivalence of GCH\mathsf{GCH} in terms of strongly independent families. We merge the two natural ways of generalizing independent families through a filter or an ideal and we focus on the C\mathcal{C}-independent families, where C\mathcal{C} is the club filter. Also we show a relationship between the existence of J\mathcal{J}-independent families and the saturation of the ideal J\mathcal{J}.

Cite

@article{arxiv.2302.09012,
  title  = {Generalized independence},
  author = {Fernando Hernández-Hernández and Carlos López-Callejas},
  journal= {arXiv preprint arXiv:2302.09012},
  year   = {2023}
}