
doi: 10.2307/1968767
Sei \(F\) ein Mengenkörper, \(m(F)\) die obere Grenze der Mächtigkeiten aller disjunkten Teilsysteme \(T\) und \(F\). (1) Ist \(m(F)\) keine unerreichbare Kardinalzahl \(> \aleph_0\), dann gibt es ein \(T\) mit \(\overline {\overline {T}} = m(F)\); gilt auch, wenn \(F\) ein Mengenring ist. (2) Zu jeder unerreichbaren Kardinalzahl \(n> \aleph_0\) gibt es einen Mengenkörper \(F\) mit \(n=m(F)\), der kein \(T\) mit \(\overline{\overline {T}}=n\) umfaßt.
Ordinal and cardinal numbers, set theory
Ordinal and cardinal numbers, set theory
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 87 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Top 10% | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 1% | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
