Events
DMS Set Theoretic Topology Seminar |
Time: Dec 04, 2019 (02:00 PM) |
Location: Parker Hall 246 |
Details: Speaker: Professor Vladimir Tkachuk Title: Point-countable pi-bases in Lindelof Sigma-spaces and some open problems. Abstract: I will finish the proof that a Lindelof Sigma-space \(X\) has a point-countable pi-base whenever the tightness and the pi-character of \(X\) are countable. After that, if any time is left, I will formulate and discuss some nice published open problems. |