Journal ArticleOPEN ACCESS

The spectrum of characters of ultrafilters on ω

Colloquium Mathematicum (2008) 111(2) 213-220
DOI: 10.4064/cm111-2-5
4Citations
Citations of this article
71Readers
Mendeley users who have this article in their library.

Abstract

We show the consistency of the statement: “the set of regular cardinals which are the characters of ultrafilters on ω is not convex”. We also deal with the set of π-characters of ultrafilters on ω.

Author supplied keywords

Cite

CITATION STYLE

APA

Shelah, S. (2008). The spectrum of characters of ultrafilters on ω. Colloquium Mathematicum, 111(2), 213–220. https://doi.org/10.4064/cm111-2-5

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free