The one-point Lindelöfication of an uncountable discrete space can be surlindelöf
Oleg Okunev (2013)
Open Mathematics
Similarity:
We prove that the one-point Lindelöfication of a discrete space of cardinality ω 1 is homeomorphic to a subspace of C p (X) for some hereditarily Lindelöf space X if the axiom [...] holds.