English

Density-Like and Generalized Density Ideals

Functional Analysis 2021-11-09 v2 General Topology

Abstract

We show that there exist uncountably many (tall and nontall) pairwise nonisomorphic density-like ideals on ω\omega which are not generalized density ideals. In addition, they are nonpathological. This answers a question posed by Borodulin-Nadzieja, Farkas, and Plebanek in [J. Symb. Log. \textbf{80} (2015), 1268--1289]. Lastly, we provide sufficient conditions for a density-like ideal to be necessarily a generalized density ideal.

Keywords

Cite

@article{arxiv.2001.00223,
  title  = {Density-Like and Generalized Density Ideals},
  author = {Adam Kwela and Paolo Leonetti},
  journal= {arXiv preprint arXiv:2001.00223},
  year   = {2021}
}

Comments

To appear in J. Symbolic Logic

R2 v1 2026-06-23T13:00:49.495Z