Cardinal invariants for the Gδ delta topology
- Autori: A. Bella; S. Spadaro
- Anno di pubblicazione: 2019
- Tipologia: Articolo in rivista
- OA Link: http://hdl.handle.net/10447/480990
Abstract
We prove upper bounds for the spread, the Lindelöf number and the weak Lindelöf number of the Gδ-topology on a topological space and apply a few of our bounds to give a short proof to a recent result of Juhász and van Mill regarding the cardinality of a σ-countably tight homogeneous compactum.