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SUMMARY:A characterisation of the congruence biframe - Graham Manuell (Uni
 versity of Edinburgh)
DTSTART:20180213T141500Z
DTEND:20180213T151500Z
UID:TALK101119@talks.cam.ac.uk
CONTACT:Tamara von Glehn
DESCRIPTION:Frames are a kind of distributive lattice that can represent '
 spaces' in pointfree topology. Remarkably\, the congruence lattice of a fr
 ame is again a frame. While there is much known about these congruence fra
 mes\, a simple internal characterisation has remained elusive. Taking a bi
 topological perspective allows us to make progress. The fact that frames p
 ossess smallest dense sublocales will also play a key role in the characte
 risation.
LOCATION:MR5\, Centre for Mathematical Sciences
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