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The Pure Math colloquium is held roughly every other week during the fall and winter terms. The talks are at 4:00 pm on Mondays and, due to COVID-19 pandemic, are currently being held online using Zoom.

Upcoming colloquia

Monday, March 8, 2021
4:00 pm - Zoom meeting:
Speaker: Linda Westrick, Penn State University
Title: "Luzin's (N) and randomness reflection"
Abstract: A function f:R->R has Luzin's property (N) if f(A) has Lebesgue measure 0 for every set A of Lebesgue measure 0.  We give a new characterization of this old property in terms of higher algorithmic randomness.  A computable f has Luzin's (N) if and only if it satisfies the following pointwise condition: for all reals x, if f(x) is Pi^1_1-random, then so is x.  Here an individual real x is called Pi^1_1-random if it is not contained in any computably describable co-analytic set of measure 0.  Joint work with Arno PAULY and YU Liang.

Monday, March 22, 2021
4:00 pm - Zoom meeting: TBA
Speaker: Guillaume Aubrun, Université Claude Bernard Lyon 1 
Title: TBA
Abstract: TBA

Here is an archive of past colloquia.