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| <b>UW Madison mathematics Colloquium is on Fridays at 4:00 pm. </b> | | <b>UW-Madison Mathematics Colloquium is on Fridays at 4:00 pm in Van Vleck B239 unless otherwise noted.</b> |
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| <!--- in Van Vleck B239, '''unless otherwise indicated'''. --->
| | Contacts for the colloquium are Dallas Albritton (fall 2025) and Paul Apisa (spring 2026). Everyone in the math department is subscribed to the mathcolloquium@g-groups.wisc.edu mailing list. |
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| =Fall 2021= | | ==This Semester's Colloquia== |
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| == September 17, 2021, B239 + [http://go.wisc.edu/wuas48 Live Stream], [https://markshus.wixsite.com/math Mark Shusterman] (Harvard) ==
| | [[Colloquia/Fall2025 | Fall 2025]] |
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| (hosted by Gurevich)
| | ==Future Colloquia== |
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| '''Finitely Presented Groups in Arithmetic Geometry'''
| | [[Colloquia/Spring2026 | Spring2026]] |
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| I will report on recent works, in part joint with Esnault—Srinivas, and with Jarden, on the finite presentability of several (profinite) groups arising in algebraic geometry and in number theory. These results build on a cohomological criterion of Lubotzky involving Euler characteristics. I will try to explain the analogy, rooted in arithmetic topology, between these results and classical facts about fundamental groups of three-dimensional manifolds.
| | ==Past Colloquia== |
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| == September 24, 2021, B239, [https://math.wisc.edu/staff/paul-sean/ Sean Paul] (UW-Madison) ==
| | [[Colloquia/Spring 2025|Spring 2025]] |
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| == October 1, 2021, B239, [https://people.math.wisc.edu/~andreic/ Andrei Caldararu] (UW-Madison) ==
| | [[Colloquia/Fall 2024|Fall 2024]] |
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| == October 8, 2021, Zoom, [https://www.maths.ox.ac.uk/people/jon.chapman Jon Chapman] (University of Oxford) ==
| | [[Colloquia/Spring2024|Spring 2024]] |
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| ('''Wasow lecture'''; hosted by Thiffeault)
| | [[Colloquia/Fall 2023|Fall 2023]] |
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| '''Asymptotics beyond all orders: the devil's invention?'''
| | [[Colloquia/Spring2023|Spring 2023]] |
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| "Divergent series are the invention of the devil, and it is shameful to base on them any demonstration whatsoever." --- N. H. Abel.
| | [[Colloquia/Fall2022|Fall 2022]] |
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| The lecture will introduce the concept of an asymptotic series, showing how useful divergent series can be, despite Abel's reservations. We will then discuss Stokes' phenomenon, whereby the coefficients in the series appear to change discontinuously. We will show how understanding Stokes' phenomenon is the key which allows us to determine the qualitative and quantitative behaviour of the solution in many practical problems. Examples will be drawn from the areas of surface waves on fluids, crystal growth, dislocation dynamics, and Hele-Shaw flow.
| | [[Spring 2022 Colloquiums|Spring 2022]] |
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| == October 11, 13, 15, 2021, Zoom, '''[Mon, Wed, Fri 4-5pm]''', [https://www.maths.usyd.edu.au/u/geordie/ Geordie Williamson] (University of Sydney) ==
| | [[Colloquia/Fall2021|Fall 2021]] |
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| (Special lecture series; hosted by Gurevich)
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| == October 22, 2021, Zoom, [https://math.berkeley.edu/people/faculty/vera-serganova Vera Serganova] (UC Berkeley) ==
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| (hosted by Gurevich/Gorin)
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| == October 29, 2021 , [https://web.math.princeton.edu/~aionescu/ Alexandru Ionescu] (Princeton University) ==
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| (hosted by Wainger)
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| == November 5, 2021 , [https://faculty.washington.edu/jathreya/ Jayadev S. Athreya] (University of Washington) ==
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| (hosted by Uyanik)
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| == November 12, 2021 , [https://sites.tufts.edu/kasso/ Kasso Okoudjou] (Tufts University) ==
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| (hosted by Stovall)
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| == November 19, 2021 , [https://math.wisc.edu/ TBA] (TBA) ==
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| (reserved by the hiring committee)
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| == December 3, 2021 , [https://math.wisc.edu/ TBA] (TBA) ==
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| (reserved by the hiring committee)
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| == December 10, 2021 , [https://math.wisc.edu/ TBA] (TBA) ==
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| (reserved by the hiring committee)
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| == Future ==
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| [[Colloquia/Spring2022|Spring 2022]] | |
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| == Past Colloquia ==
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| [[Colloquia/Spring2021|Spring 2021]] | | [[Colloquia/Spring2021|Spring 2021]] |