Number of open sets for a topology with a countable basis
| dc.creator | Shelah, Saharon | |
| dc.date | 1993-08-15 | |
| dc.date.accessioned | 2026-07-07T09:14:57Z | |
| dc.date.available | 2026-07-07T09:14:57Z | |
| dc.description | Let T be the family of open subsets of a topological space (not necessarily Hausdorff or even T_0). We prove that if T has a countable base and is not countable, then T has cardinality at least continuum. | |
| dc.identifier | https://arxiv.org/abs/math/9308217 | |
| dc.identifier | http://arxiv.org/abs/math/9308217 | |
| dc.identifier | Israel J. Math. 83 (1993), 369--374 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/152860 | |
| dc.subject | Logic | |
| dc.subject | General Topology | |
| dc.title | Number of open sets for a topology with a countable basis | |
| dc.type | text |