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DTSTART;TZID=America/New_York:20260915T090000
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SUMMARY:Lagrangian Floer Theory and Applications Program
DESCRIPTION:Lagrangian Floer theory and Applications Program \nDates: September 15–November 21\, 2026 \nLocation: CMSA G10\, 20 Garden St.\, Cambridge MA 02138 \nThis thematic program will focus on recent developments in Lagrangian Floer theory and applications.  These include the development of family Floer theory\, degeneration techniques\, Floer homotopy theory in the Lagrangian case\, Floer theory in prime characteristic\, and applications to problems in singularity theory\, geometry and dynamics. \nA one-week workshop will be held near the start of the program (September 28 – October 2\, 2026)\, with the same title as the thematic program. \nOrganizers: Denis Auroux (Harvard)\, Jonny Evans (Lancaster)\, and Chris Woodward (Rutgers) \n  \nTo express interest in attending the workshop or program\, and to apply for funding if available\, please fill out the form.  \nFunding from the National Science Foundation may be available for US-based graduate students and postdoctoral fellows. \n  \n \nimage: Water Sky Garden\, Vancouver\nDate: 31 January 2010\, 12:57:46\nSource: Studio Echelman\nAuthor: Peter Vanderwarker\, Studio Echelman \n 
URL:https://cmsa.fas.harvard.edu/event/lft2026/
LOCATION:CMSA 20 Garden Street Cambridge\, Massachusetts 02138 United States
CATEGORIES:Programs
ATTACH;FMTTYPE=image/jpeg:https://cmsa.fas.harvard.edu/media/LFT_poster-1.jpg
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DTSTART;TZID=America/New_York:20261030T120000
DTEND;TZID=America/New_York:20261030T130000
DTSTAMP:20261022T191646Z
CREATED:20260729T193210Z
LAST-MODIFIED:20261022T191646Z
UID:10004004-1793361600-1793365200@cmsa.fas.harvard.edu
SUMMARY:Poincaré Duality in Quantum Error-Correcting Codes
DESCRIPTION:Member Seminar \nSpeaker: Bowen Yang \nTitle: Poincaré Duality in Quantum Error-Correcting Codes \nAbstract: Quantum information is fragile\, and one of the main tools for protecting it is a family of error-correcting codes called stabilizer codes. These codes have a second life as exactly solvable models of quantum matter: the code space is the vacuum state and the “syndromes” behave like excitations that can move freely\, get stuck in place\, or wind around one another. I will show how a little homological algebra packages these excitations into clean mathematical objects\, which we call charge modules. Moreover\, there are natural pairing between different charge modules of complementary degrees sometimes called “braiding”. They actually came from the Poincare duality of the sphere. This is joint work with Błażej Ruba. \n 
URL:https://cmsa.fas.harvard.edu/event/member-seminar-103026/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Member Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/2026/07/CMSA-Member-Seminar-10.30.26.png
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DTSTART;TZID=America/New_York:20261030T150000
DTEND;TZID=America/New_York:20261030T163000
DTSTAMP:20261027T142255Z
CREATED:20261027T135801Z
LAST-MODIFIED:20261027T142255Z
UID:10004059-1793372400-1793377800@cmsa.fas.harvard.edu
SUMMARY:4-manifold topology and collision rank of groups
DESCRIPTION:Freedman Seminar \nSpeaker: Michael Freedman\, Harvard CMSA \nTitle: The geometry of the Bing Involution \nAbstract: I’ll discuss a new sharper proof\, joint with Mike Starbird that precisely quantifies the stretching necessary for Bing’s wild involution on S^3.
URL:https://cmsa.fas.harvard.edu/event/freedman_103026/
LOCATION:Virtual
CATEGORIES:Freedman Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/2026/10/CMSA-Freedman-Seminar-10.30.26-1.png
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