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arXiv · 1902.08677

Ideals on countable sets: a survey with questions

Carlos Uzcategui
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Abstract

An ideal on a set $X$ is a collection of subsets of $X$ 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.

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Carlos Uzcategui. 2019-02-22. Ideals on countable sets: a survey with questions. https://doi.org/10.18273/revint.v37n1-201900

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