Hello everyone, Due to the snow day, Bo-hyun's talk from yesterday was postponed until today. Apologies on the short notice on the change, we had to find a room and a time which was free. The seminar will be at 2:30 today in MSCS 422. If anyone is interested in joining Bo-hyun and me for lunch meet at the mailboxes at noon. Title: On weak reducing disks for the unknot in 3-bridge position Speaker: Bo-hyun Kwon, Korea University Date: Feb 20, 2019 Time: 2:30 PM Room: MSCS 422 Abstract: In this talk, we show that the complex of weak reducing disks for the unknot in 3-bridge position is contractible. This is joint work with Dr. Jung Hoon Lee. ______________________ Neil R. Hoffman Assistant Professor Department of Mathematics 523 Math Science Building Oklahoma State University Stillwater, OK 74078-1058 405-744-7791 http://math.okstate.edu/people/nhoffman