English

Ideals on countable sets: a survey with questions

Logic 2019-02-26 v1

Abstract

An ideal on a set XX is a collection of subsets of XX closed under the operations of taking finite unions and subsets of its elements. Ideals are a very useful notion in topology and set theory and have been studied for a long time. We present a survey of results about ideals on countable sets and include many open questions.

Keywords

Cite

@article{arxiv.1902.08677,
  title  = {Ideals on countable sets: a survey with questions},
  author = {Carlos Uzcategui},
  journal= {arXiv preprint arXiv:1902.08677},
  year   = {2019}
}
R2 v1 2026-06-23T07:48:37.177Z