A Characterization of 2-Square Ultrafilters
Ned I. Rosen
Source: J. Symbolic Logic Volume 48, Issue 2 (1983), 409-414.
Abstract
The class of 2-square ultrafilters on $\omega$ equals the union, for $n \geq 1$, of the classes of strictly $n$ Ramsey ultrafilters on $\omega$.
Full-text: Remote access
If you are a member of the ASL, log in to Euclid for access.
Full-text is available via JSTOR, for JSTOR subscribers. Go to this article in JSTOR.
Links and Identifiers
Permanent link to this document: http://projecteuclid.org/euclid.jsl/1183741257
JSTOR: links.jstor.org
Mathematical Reviews number (MathSciNet):
MR704095
Zentralblatt MATH identifier:
0564.04004
