Mdtop April 2014

mdtop@mathdept.okstate.edu

3 participants
5 discussions

Slight time change
by Jesse Johnson 25 Apr '14

25 Apr '14

Dear Topologists and Friends of Topology, The time for the seminar this afternoon has been changed to 3:45 instead of 3:30. Jesse

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Topology Seminars this week
by Odonnol, Danielle Odonnol 23 Apr '14

23 Apr '14

Hello Topologists and Friends of Topology, We are happy to have two visitors this week. On Thursday (3:30 in MSCS 514) we will have Tye Lidman from University of Texas, Austin, speaking on Homology three-spheres and surgery obstructions. On Friday (3:30 in MSCS 514) we will have Jessica Banks from UQAM speaking on Seifert surfaces and point-pushing.

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Extra seminar next week
by Jesse Johnson 18 Apr '14

18 Apr '14

Dear Topologists and Friends of Topology, Next week, we have two seminar speakers. Tye Lidman will speak at the normal seminar time. Jessica Banks will also give a seminar, but there's a question of when would be the best time. (Both talks have titles and abstracts on announce.) She is currently scheduled for Friday at 3:30, since there is no colloquium next week. Does anyone have a time conflict with that slot? An alternative option would be to have Jessica speak right after Tye's talk on Thursday, but I don't know if that would be too much. Please let me know what you think. Jesse

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Topology Seminar Thursday
by Odonnol, Danielle Odonnol 08 Apr '14

08 Apr '14

Hello Topologists and Friends of Topology, This Thursday we are pleased to have Jesse Johnson speaking on "Train tracks and the curve complex." It will be at 3:30 pm in MSCS 514, as usual.

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Topology Seminar Thursday
by Odonnol, Danielle Odonnol 01 Apr '14

01 Apr '14

Hello Topologists and Friends, We are happy to Alex Zupan speaking this week, on Thursday at 3:30 in MSCS 514. Title: The bridge number of high distance tangle sums Abstract: A bridge sphere for a knot K in the 3-sphere cuts K into two collections of unknotted arcs, and the bridge number of K is the minimum number of arcs in such a decomposition. The behavior of bridge number under taking connected sums is well-understood. On the other hand, it is difficult to predict the bridge number of a knot expressed as the sum of two arbitrary tangles. We will show the bridge number of the sum of two sufficiently complicated tangles, measured in terms of distances in the curve complex, behaves as expected. This is joint work with Ryan Blair.

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Mdtop April 2014