Recreational swims provide a fun and engaging way for children and parents to practice new skills, stay active, and enjoy quality time together in the pool with the MIT community.No Z Center (MIT Recreation - Zesiger Sports and Fitness Center) membership is required to participate.A parent or caregiver must accompany children in the water. Per Z Center policy, each adult may supervise up to two children at a time.Children must be at least 6 months old to join. If younger, they must be able to hold their head up comfortably. Registration is here. Only for MIT Spouses and Partners Connect members.

Got a research-based writing project on the horizon but don’t know how to start? This hands-on, interactive workshop led by Writing and Communication Center lecturer Chris Featherman, PhD, can help. You’ll learn and practice a problem-based approach to discovering, exploring, and focusing a research topic so you can start writing.Complementing these practical and conceptual strategies will be tips for building a strong writing mindset and quieting the anxiety that often accompanies the start of a writing or communication project.

Extreme Equilibria: The Benefits of Correlation | Fedor Sandomirskiy

Speaker: Alex Lubotzky (Weizmann Institute & the Hebrew University, Simons Distinguished Visiting Professor, MIT)Title: High Dimensional Expanders (HDX) and their applications in pure math and computer scienceAbstract:Expander graphs have been an intensive topic of research in math and CS during the last six decades. In the last two decades a high dimensional theory has emerged with (very different) applications in math & CS.In this series of 8 independent (but related) lectures we present some aspects of the theory of HDX and its applications, a number of open problems and suggestions for further research.A more detailed plan:1. Thursday 2/20/25, 4:30pm, 2-190 (Math Colloquium); refreshments served at 4pm in 2-290  Introduction: three main problems(a) Gromov overlapping property(b) Locally testable codes(c) Are all groups sofic?2. Tuesday 2/25/25, 4:15-5:15pm, 32-G449 (Theory of Computing Colloquium), refreshments served at 4pmGood Locally testable codes3. Wednesday 2/26/25, 9:30-11am, 2-449Expander graphs: combinatorics, spectral gap, representation theory(Kazhdan property (T), property (\tau) and more) and property testing4. Wednesday 3/5/25, 9:30-11am, 2-449Geometric & topological expanders, Coboundary expanders, Random simplicial complexes and Property testing5. Wednesday 3/12/25, 9:30-11am, 2-449From Ramanujan graphs to Ramanujan complexes6. Wednesday 3/19/25, 9:30-11am, 2-449Stability and group approximation, Garland Theorem and the p-adic Deligne central extensionsWednesday 3/26/25 - Spring vacation7. Wednesday 4/2/26, 9:30-11am, 2-449Some more CS: Agreement tests, direct product test; PCP8. Wednesday 4/9/25, 9:30-11am, 2-449Are there non-sofic groups? The Aldous-Lyons conjecture and more

Speaker: Alex Lubotzky (Weizmann Institute & The Hebrew University, Simons Distinguished Visiting Professor, MIT)Title: High Dimensional ExpandersAbstract:Expander graphs have been an intensive topic of research in math and CS during the last six decades. In the last two decades a high dimensional theory has emerged with (very different) applications in math & CS. This colloquium talk is actually the first of 8 independent (but related) lectures about some aspects of the theory of HDX and its applications, as well as a number of open problems and suggestions for further research. This lecture will focus on three main problems (a) Gromov overlapping property, (b) Locally testable codes and (c) Are all groups sofic?*Pre-reception held in 2-290 at 4pm.