Colloquia & Seminars

Title: New Technologies in Mathematics Seminar

New Technologies in Mathematics Seminar Speaker: Johannes von Oswald (Google)

Title: Geometry and Mathematical Physics Seminar

Geometry and Mathematical Physics Seminar Speaker: Roland Bittleston (Harvard)

Title: Member Seminar

Member Seminar Speaker: Saman Habibi Esfahani

Title: Snake graphs and q-deformed real numbers

Colloquium Speaker: James Propp (UMass Lowell) Title: Snake graphs and q-deformed real numbers Abstract: I'll present a statistical-mechanical construction of q-deformed real numbers [[x]]_q, inspired by the q-deformed rational numbers [x]_q of Morier-Genoud and Ovsienko. The new construction admits two equivalent formulations: one in terms of random filters in snake posets and the other in terms of random dimer covers of snake graphs. I'll begin with a combinatorial approach to Stern's diatomic series and the Calkin–Wilf bijection via finite snake graphs, and then construct q-deformed rational numbers by introducing an activity parameter q into the model. I extend from q-deformed rationals to q-deformed reals by passing from finite to infinite snake graphs; the main technical step is to show that the associated limiting...

Title: Mathematical Economics Seminar: Experimental Design in Networks

Speaker: Christopher Harshaw (c.harshaw@columbia.edu), Columbia University Title: Design-Based Minimax Theory for Network Experiments Abstract: Network experiments are used throughout the social and medical sciences to investigate causal effects under the presence of interference. While a large body of work has developed improved statistical procedures, the fundamental limits of statistical estimation in these settings is less well understood. In this paper, we develop and investigate a design-based theory of minimax risk for network experiments under an arbitrary neighborhood interference model. Our notion of minimax risk describes the optimal precision among all statistical procedures for investigating a particular causal effect on the observed interference network. We show that the minimax risk is a function of the corresponding conflict graph, which captures inherent...

Title: New Technologies in Mathematics Seminar

New Technologies in Mathematics Seminar Speaker: tba

Title: AI for the Working Mathematician

AI for the Working Mathematician Speaker: Ken Ono, Axiom Math and University of Virginia Title: TBA

Title: Geometry and Mathematical Physics seminar

Geometry and Mathematical Physics seminar Speaker: Joshua Greene, Boston College

Title: Member Seminar

Member Seminar  

Title: Colloquium

Colloquium Speaker: Ewain Gwynne, U Chicago       To subscribe or unsubscribe to the colloquium mailing list, please visit this link.

Title: Geometry and Quantum Theory Seminar

Joint Math/CMSA Geometry and Quantum Theory Seminar Speaker: Yosuke Kubota, Kyoto University

Title: New Technologies in Mathematics Seminar

New Technologies in Mathematics Seminar Speaker:Julia Kempe (NYU)

Title: Colloquium

Colloquium       To subscribe or unsubscribe to the colloquium mailing list, please visit this link.

Title: Geometry and Quantum Theory Seminar

Joint Math/CMSA Geometry and Quantum Theory Seminar  

Title: New Technologies in Mathematics Seminar

New Technologies in Mathematics Seminar Speaker: Pierre Ablin (Apple)