Seminar series
Date
Mon, 24 Feb 2014
14:00
14:00
Location
C6
Speaker
Richard Lupton
Organisation
Oxford
We explore the technique of elementary submodels to prove
results in topology and set theory. We will in particular prove the
delta system lemma, and Arhangelskii's result that a first countable
Lindelof space has cardinality not exceeding continuum.