Prairie Mathematics Colloquium Announcement: Feb. 7 @ 3:30 pm in PHYS 107

Prairie Mathematics Colloquium Announcement

https://prairiemathematics.wixsite.com/colloquium

Note: Attendance at the colloquium is mandatory for graduate students in Math & Stats. Students are required to sign in at the end of the talk. If you have a conflict or concern, please contact Kyla ASAP.

Date/Time: Friday, February 7 @ 3:30 PM

Location: PHYSICS 107

Speaker: Derek Krepski, University of Manitoba

Title: Infinitesimal symmetries of bundle gerbes

Abstract: The study of gerbes in differential geometry has its origins in the work of Brylinski in the 1990s, and was soon after made more user-friendly through the work of Hitchin and Chatterjee, and ultimately Murray’s `bundle gerbes’. Bundle gerbes are analogous to principal U(1)-bundles (or complex line bundles), in the sense that bundle gerbes are geometric realizations of degree 3 cohomology, as U(1)-bundles are in degree 2. In this talk, we discuss bundle gerbes and consider their infinitesimal symmetries (i.e., vector fields on them), and present some recent related developments in a joint project with Jennifer Vaughan.

Coffee / Tea: 2:45 pm in McLean 201 (Lounge)

The Prairie Mathematics Colloquium is a new colloquium series aiming to bring together mathematicians with the underlying goals of sharing interesting mathematics while initiating and fostering new collaborations, hence strengthening the mathematical community on the prairies of Canada.

Doug Farenick from the University of Regina delivered the first talk in this series at the University of Manitoba on November 28. If you missed Doug’s talk, a video is available on the Prairie Mathematics Colloquium website: https://video.wixstatic.com/video/45c9b7_71dd6f3068b9435c9a4d2335d12ee945/360p/mp4/file.mp4

The third and final talk in this year’s series will take place on Friday, March 20 at 3:30 PM at the University of Regina (the talk will be livestreamed for viewing at the U of S). Jenna Rajchgot will be the speaker. More details about Jenna’s talk will be circulated in mid-March.

We hope to see you all at the colloquium!

Colloquium Committee

University of Saskatchewan

Department of Mathematics and Statistics

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