Ten minutes for your mind@2:50 every day at 2:50 pm in multiple time zones:Europa@2:50, EET, Athens, Helsinki (UTC+2) (7:50 am EST) https://us02web.zoom.us/j/88298032734Atlantica@2:50, EST, New York, Toronto (UTC-4) https://us02web.zoom.us/j/85349851047Pacifica@2:50, PST, Los Angeles, Vancouver (UTC=7) (5:50 pm EST) https://us02web.zoom.us/j/85743543699Almost everything works better again if you unplug it for a bit, including your mind. Stop by and unplug. Get the benefits of mindfulness without the fuss.@2:50 meets at the same time every single day for ten minutes of quiet together.No pre-requisite, no registration needed.Visit the website to view all @2:50 time zones each day.at250.org or at250.mit.edu

Speaker: Guillermo Peñafort Sanchis (University of Valencia)Title: Open problems about deformations of singular holomorphic map germsAbstract:The theory of deformations of germs of holomorphic mappings and the theory of deformations of germs of complex hypersurfaces share many features, which become apparent once one knows how to translate from one to the other. But, for any result about hypersurfaces, the corresponding result about mappings tends to be much harder to prove. In this talk we will discuss open problems about singular mappings, based on the following known results about isolated hypersurface singularities:· The Milnor number is greater than or equal to the Tjurina number and their quotient cannot exceed the dimension of the ambient space.· If two hypersurfaces have the same topological type, then their Milnor numbers are equal.· Singularities cannot be split in two without giving rise to non-trivial homology.

Speakers: Alex Cohen (MIT)Title: Ruling out periodicity in quantum chaosAbstract: A central question in quantum chaos is to understand the behavior of high-frequency Laplace eigenfunctions on hyperbolic manifolds. Quantum cat maps are a model system that behave hyperbolic manifolds: the known tools apply equally well to both systems. However, for special parameter choices quantum cat maps exhibit a strange periodicity, resulting in concentration of eigenfunctions—behavior not expected for eigenfunctions on hyperbolic manifolds. We discuss new work distinguishing these two systems. The key ingredient is an uncertainty principle that distinguishes the Fourier transform from a modified Fourier transform with nonlinear phase function.Joint with Semyon Dyatlov.

“The Market Effects of Algorithms” | Lindsey Raymond (Microsoft Research)

Speaker: Joanna Wysocka, StanfordHost: Yadira Soto Feliciano & Eliezer CaloTitle: "Human development and evolution through the lens of gene regulation." The Mayer LectureThe Biology Colloquium is a weekly seminar held throughout the academic year — featuring distinguished speakers in many areas of the biological sciences from universities and institutions worldwide. More information on speakers, their affiliations, and titles of their talks will be added as available. Unless otherwise stated, the Colloquium will be held live in Stata 32-123 (Kirsch auditorium) Contact Margaret Cabral with questions.

A vinyl listening session hosted by Grammy Award-Winner Miguel Zenón and Lewis Music Library Department Head Avery Boddie.This event will introduce listeners to leading pioneers and musicians of jazz as well as the most influential albums of the genre spanning the past 100 years. Listeners will learn the societal influences and historical contexts which influenced each album. Several key artists covering different time periods will be examined, as will their unique musical styles, creative practices, and lasting contributions to the genre.