Type: Article
Publication Date: 1977-03-01
Citations: 57
DOI: https://doi.org/10.1017/s0305004100053238
Action | Title | Year | Authors |
---|---|---|---|
+ | Ultrafilters on a countable set | 1970 |
David Booth |
+ | Short complete nested sequences in βN⧹N and small maximal almost-disjoint families | 1972 |
Stephen H. Hechler |