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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250305T120000
DTEND;TZID=America/New_York:20250305T130000
DTSTAMP:20250228T211437Z
CREATED:20241125T204417Z
LAST-MODIFIED:20250228T211437Z
UID:10003625-1741176000-1741179600@live-hu-cmsa-222.pantheonsite.io
SUMMARY:CMSA Q&A Seminar: Puskar Mondal
DESCRIPTION:CMSA Q&A Seminar \nSpeaker: Puskar Mondal\, Harvard CMSA \nTopic: What is the positive energy theorem?
URL:https://live-hu-cmsa-222.pantheonsite.io/event/cmsaqa_3525/
LOCATION:Common Room\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:CMSA Q&A Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Q-A-Seminar-3.5.2025.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250225T161500
DTEND;TZID=America/New_York:20250225T181500
DTSTAMP:20250210T174635Z
CREATED:20250124T152655Z
LAST-MODIFIED:20250210T174635Z
UID:10003671-1740500100-1740507300@live-hu-cmsa-222.pantheonsite.io
SUMMARY:Algebras of "symmetries" in QFT and applications to solitons (2)
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeaker: Dan Freed\, Harvard CMSA and Math \nTitle:  Algebras of “symmetries” in QFT and applications to solitons (2) \nhttps://arxiv.org/abs/2403.08883
URL:https://live-hu-cmsa-222.pantheonsite.io/event/quantumgeo_22525/
LOCATION:Science Center 507\, 1 Oxford Street\, Cambridge\, 02138
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Geometry-Quantum-Theory-2.25.2025.2.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250219T120000
DTEND;TZID=America/New_York:20250219T130000
DTSTAMP:20250210T172019Z
CREATED:20241125T204133Z
LAST-MODIFIED:20250210T172019Z
UID:10003623-1739966400-1739970000@live-hu-cmsa-222.pantheonsite.io
SUMMARY:CMSA Q&A Seminar: Phillip Matchett Wood
DESCRIPTION:CMSA Q&A Seminar \nSpeaker: Phillip Matchett Wood\, Harvard University \nTopic: Info session on the CMSA/Mathematics Summer REU Program (Research Experience for Undergraduates) \n 
URL:https://live-hu-cmsa-222.pantheonsite.io/event/cmsaqa_21925/
LOCATION:Common Room\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:CMSA Q&A Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Q-A-Seminar-2.19.2025.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250218T161500
DTEND;TZID=America/New_York:20250218T181500
DTSTAMP:20250210T174514Z
CREATED:20250124T152555Z
LAST-MODIFIED:20250210T174514Z
UID:10003670-1739895300-1739902500@live-hu-cmsa-222.pantheonsite.io
SUMMARY:Algebras of "symmetries" in QFT and applications to solitons (1)
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeaker: Dan Freed\, Harvard CMSA and Math \nTitle:  Algebras of “symmetries” in QFT and applications to solitons (1) \nhttps://arxiv.org/abs/2403.08883
URL:https://live-hu-cmsa-222.pantheonsite.io/event/quantumgeo_21825/
LOCATION:Science Center 507\, 1 Oxford Street\, Cambridge\, 02138
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Geometry-Quantum-Theory-2.18.2025.1.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250213T160000
DTEND;TZID=America/New_York:20250213T170000
DTSTAMP:20250328T150436Z
CREATED:20240708T151711Z
LAST-MODIFIED:20250328T150436Z
UID:10003396-1739462400-1739466000@live-hu-cmsa-222.pantheonsite.io
SUMMARY:2025 Ding Shum Lecture: Irit Dinur\, IAS: Expanders from local to global
DESCRIPTION:  \n \nOn February 13\, 2025 the CMSA hosted the sixth annual Ding Shum Lecture\, given by Irit Dinur\, Institute for Advanced Study. \nLocation: Harvard Science Center  Hall A & via Zoom Webinar \nSpeaker: Irit Dinur\, Institute for Advanced Study \n\n\n\nTitle: Expanders from local to global \nAbstract: Imagine a network—like a social network\, a transportation system\, or even a biological system—where every part of the network is robustly connected to the rest. Expander graphs are the mathematical idealization of such networks. They are structures where any small group of points (nodes) has many connections to the rest of the graph\, ensuring that no part is isolated and information (or influence) spreads efficiently throughout.\nWe will begin by surveying expander graphs\, their discovery and construction\, and some fascinating applications such as error-correcting codes\, pseudorandomness\, and probabilistically checkable proofs (PCPs)\, highlighting their role as a foundation for many breakthroughs in theoretical computer science. Then\, we will shift focus to an exciting new kind of expanders called high dimensional expanders (HDXs). While expanders are well-understood and widely applied\, HDXs remain enigmatic\, with potential that we are only starting to uncover. We will talk about a fascinating local to global feature that HDXs have\, and some applications. \n\n \n\n\n\n\nThis event is made possible by the generous funding of Ding Lei and Harry Shum.\n\n\n 
URL:https://live-hu-cmsa-222.pantheonsite.io/event/2025_dingshum/
LOCATION:Harvard Science Center\, 1 Oxford Street\, Cambridge\, MA\, 02138
CATEGORIES:Ding Shum Lecture,Event,Public Lecture,Special Lectures
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/DIngShum_21325.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250212T120000
DTEND;TZID=America/New_York:20250212T130000
DTSTAMP:20250131T154821Z
CREATED:20241104T145634Z
LAST-MODIFIED:20250131T154821Z
UID:10003534-1739361600-1739365200@live-hu-cmsa-222.pantheonsite.io
SUMMARY:CMSA Q&A Seminar: Javier Gomez-Serrano
DESCRIPTION:CMSA Q&A Seminar \nSpeaker: Javier Gomez-Serrano\, Brown University \nTopic: Please tell us about the Millennium prize problem for Navier-Stokes and segue from that into ML?
URL:https://live-hu-cmsa-222.pantheonsite.io/event/cmsaqa_21225/
LOCATION:Common Room\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:CMSA Q&A Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Q-A-Seminar-2.12.2025.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250211T161500
DTEND;TZID=America/New_York:20250211T181500
DTSTAMP:20250204T212412Z
CREATED:20250124T152335Z
LAST-MODIFIED:20250204T212412Z
UID:10003654-1739290500-1739297700@live-hu-cmsa-222.pantheonsite.io
SUMMARY:Discussion of Integrating quantum groups over surfaces
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeaker: Ben Gammage\, Harvard University \nTitle: Discussion of Integrating quantum groups over surfaces \nhttps://arxiv.org/abs/1501.04652
URL:https://live-hu-cmsa-222.pantheonsite.io/event/quantumgeo_21125/
LOCATION:Science Center 507\, 1 Oxford Street\, Cambridge\, 02138
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Geometry-Quantum-Theory-2.11.2025.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250205T120000
DTEND;TZID=America/New_York:20250205T130000
DTSTAMP:20250106T151435Z
CREATED:20241104T201420Z
LAST-MODIFIED:20250106T151435Z
UID:10003591-1738756800-1738760400@live-hu-cmsa-222.pantheonsite.io
SUMMARY:CMSA Q&A Seminar: Subir Sachdev
DESCRIPTION:CMSA Q&A Seminar \n\nSpeaker: Subir Sachdev\, Harvard University \nTopic: What is a quantum critical region?
URL:https://live-hu-cmsa-222.pantheonsite.io/event/cmsaqa_2525/
LOCATION:Common Room\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:CMSA Q&A Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Q-A-Seminar-2.5.2025.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250204T161500
DTEND;TZID=America/New_York:20250204T181500
DTSTAMP:20250124T152130Z
CREATED:20240917T160739Z
LAST-MODIFIED:20250124T152130Z
UID:10003513-1738685700-1738692900@live-hu-cmsa-222.pantheonsite.io
SUMMARY:Blob homology
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeaker: Sunghyuk Park\, Harvard CMSA \nTitle: Blob homology
URL:https://live-hu-cmsa-222.pantheonsite.io/event/quantumgeo_2425/
LOCATION:Science Center 507\, 1 Oxford Street\, Cambridge\, 02138
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Geometry-Quantum-Theory-2.4.2025.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250128T161500
DTEND;TZID=America/New_York:20250128T181500
DTSTAMP:20250124T151709Z
CREATED:20250124T150923Z
LAST-MODIFIED:20250124T151709Z
UID:10003653-1738080900-1738088100@live-hu-cmsa-222.pantheonsite.io
SUMMARY:Review of the excision property in factorization homology
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeaker: Keyou Zeng\, Harvard CMSA \nTitle: Review of the excision property in factorization homology
URL:https://live-hu-cmsa-222.pantheonsite.io/event/quantumgeo_12825/
LOCATION:Science Center 507\, 1 Oxford Street\, Cambridge\, 02138
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Geometry-Quantum-Theory-1.28.2025.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250122T120000
DTEND;TZID=America/New_York:20250122T130000
DTSTAMP:20250107T192219Z
CREATED:20241218T144410Z
LAST-MODIFIED:20250107T192219Z
UID:10003652-1737547200-1737550800@live-hu-cmsa-222.pantheonsite.io
SUMMARY:CMSA Q&A Seminar: Edgar Shaghoulian
DESCRIPTION:CMSA Q&A Seminar \nSpeaker: Edgar Shaghoulian\, UC Santa Cruz \nTopic: What are the main questions in quantum gravity today?
URL:https://live-hu-cmsa-222.pantheonsite.io/event/cmsaqa_12225/
LOCATION:Common Room\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:CMSA Q&A Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/Copy-of-CMSA-Q-A-Seminar-1.22.2025.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241205T103000
DTEND;TZID=America/New_York:20241205T120000
DTSTAMP:20241119T150954Z
CREATED:20241119T141605Z
LAST-MODIFIED:20241119T150954Z
UID:10003621-1733394600-1733400000@live-hu-cmsa-222.pantheonsite.io
SUMMARY:Quantum Cellular Automata
DESCRIPTION:Special Seminar \nSpeaker: Jeongwan Haah\, Stanford University \nTitle: Quantum Cellular Automata \nAbstract: A discrete time evolution on lattice systems that has a notion of lightcone is called a quantum cellular automaton. Lattice translation in 1D is a well-known example of QCA that is nontrivial in the sense that it is not a local Hamiltonian evolution. In higher dimensions\, more subtle QCA are found in relation to certain topological phases of matter\, but the scope of all QCA is far from being fully determined. I will report the status of our understanding on this subject\, emphasizing the role of locally generated simple subalgebras.
URL:https://live-hu-cmsa-222.pantheonsite.io/event/seminar_12524/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Special Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Special-Seminar-12.5.2024.docx-1.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241203T161500
DTEND;TZID=America/New_York:20241203T181500
DTSTAMP:20241104T152406Z
CREATED:20240917T162348Z
LAST-MODIFIED:20241104T152406Z
UID:10003517-1733242500-1733249700@live-hu-cmsa-222.pantheonsite.io
SUMMARY:Factorization Homology
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeakers: Sunghyuk Park and Vasily Krylov\, Harvard CMSA \nTitle: Factorization Homology
URL:https://live-hu-cmsa-222.pantheonsite.io/event/quantumgeo_12324/
LOCATION:Science Center Hall E\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Geometry and Quantum Theory Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241121T090000
DTEND;TZID=America/New_York:20241121T103000
DTSTAMP:20241203T144846Z
CREATED:20240923T152934Z
LAST-MODIFIED:20241203T144846Z
UID:10003528-1732179600-1732185000@live-hu-cmsa-222.pantheonsite.io
SUMMARY:CMSA/Tsinghua Math-Science Literature Lecture: Bjorn Poonen\, MIT
DESCRIPTION:CMSA/Tsinghua Math-Science Literature Lecture \nDate: November 21\, 2024 \nTime: 9:00 – 10:30 am ET \nLocation: CMSA G10\, 20 Garden Street\, Cambridge MA & via Zoom \nSpeaker: Bjorn Poonen\, MIT \nTitle: Ranks of elliptic curves \nAbstract: Elliptic curves are simplest varieties whose rational points are not fully understood\, and they are the simplest projective varieties with a nontrivial group structure.  In 1922 Mordell proved that the group of rational points on an elliptic curve is finitely generated.  We will survey what is known and what is believed about this group. \n  \n\nBeginning in Spring 2020\, the CMSA began hosting a lecture series on literature in the mathematical sciences\, with a focus on significant developments in mathematics that have influenced the discipline\, and the lifetime accomplishments of significant scholars.
URL:https://live-hu-cmsa-222.pantheonsite.io/event/mathscilit2024_bp/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Math Science Literature Lecture Series
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/Mathlit_Poonen_11x17.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241120T163000
DTEND;TZID=America/New_York:20241120T173000
DTSTAMP:20241120T172458Z
CREATED:20241120T165843Z
LAST-MODIFIED:20241120T172458Z
UID:10003622-1732120200-1732123800@live-hu-cmsa-222.pantheonsite.io
SUMMARY:Perturbative Factorization Algebras
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeaker: Ahsan Khan\n\n\n\nTitle: Perturbative Factorization Algebras\n\nAbstract: In physics the starting point in studying a QFT is to write down an appropriate action functional. My talk will aim to sketch how this connects with the framework of factorization algebras.
URL:https://live-hu-cmsa-222.pantheonsite.io/event/quantumgeo_112024/
LOCATION:Science Center Hall E\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Geometry-Quantum-Theory-11.20.2024.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241120T120000
DTEND;TZID=America/New_York:20241120T130000
DTSTAMP:20241107T171413Z
CREATED:20241104T194035Z
LAST-MODIFIED:20241107T171413Z
UID:10003535-1732104000-1732107600@live-hu-cmsa-222.pantheonsite.io
SUMMARY:CMSA Q&A Seminar: Anurag Anshu
DESCRIPTION:CMSA Q&A Seminar \nSpeaker: Anurag Anshu\, Harvard University \nTopic: What is quantum complexity theory? \n  \n 
URL:https://live-hu-cmsa-222.pantheonsite.io/event/cmsaqa_112024/
LOCATION:Common Room\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:CMSA Q&A Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Q-A-Seminar-11.20.2024.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241119T180000
DTEND;TZID=America/New_York:20241119T190000
DTSTAMP:20241118T171726Z
CREATED:20240917T162304Z
LAST-MODIFIED:20241118T171726Z
UID:10003515-1732039200-1732042800@live-hu-cmsa-222.pantheonsite.io
SUMMARY:Factorization algebras in TQFT
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeakers: Mayuko Yamashita\, Kyoto University \nTitle: Factorization algebras in TQFT \nAbstract: This is the first in the series of our working seminars on factorization algebras/homologies. This talk focuses on locally constant factorization algebras\, which correspond to Topological QFTs. I first explain they are equivalent to algebras over E_n operads and their variants. Then I define the factorization homology and discuss basic properties and examples. If time allows\, I also mention the connection with the cobordism hypothesis.
URL:https://live-hu-cmsa-222.pantheonsite.io/event/quantumgeo_111924/
LOCATION:Science Center 507\, 1 Oxford Street\, Cambridge\, 02138
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=application/pdf:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Geometry-Quantum-Theory-11.19.2024.docx.pdf
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241106T120000
DTEND;TZID=America/New_York:20241106T130000
DTSTAMP:20241024T135813Z
CREATED:20241016T181341Z
LAST-MODIFIED:20241024T135813Z
UID:10003533-1730894400-1730898000@live-hu-cmsa-222.pantheonsite.io
SUMMARY:CMSA Q&A Seminar: Michael Douglas
DESCRIPTION:CMSA Q&A Seminar \nSpeaker: Michael Douglas\, Harvard CMSA \nTopic: What is Argyres-Douglas theory?
URL:https://live-hu-cmsa-222.pantheonsite.io/event/cmsaqa_11624/
LOCATION:Common Room\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:CMSA Q&A Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Q-A-Seminar-11.6.2024.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241105T161500
DTEND;TZID=America/New_York:20241105T181500
DTSTAMP:20241104T184936Z
CREATED:20240917T160718Z
LAST-MODIFIED:20241104T184936Z
UID:10003512-1730823300-1730830500@live-hu-cmsa-222.pantheonsite.io
SUMMARY:Introduction to Factorization algebras
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeaker: Dan Freed\, Harvard University \nTitle: Introduction to Factorization algebras
URL:https://live-hu-cmsa-222.pantheonsite.io/event/quantumgeo_11524/
LOCATION:Science Center Hall E\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Geometry-Quantum-Theory-11.5.2024.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241030T120000
DTEND;TZID=America/New_York:20241030T130000
DTSTAMP:20241024T135640Z
CREATED:20241016T181110Z
LAST-MODIFIED:20241024T135640Z
UID:10003532-1730289600-1730293200@live-hu-cmsa-222.pantheonsite.io
SUMMARY:CMSA Q&A Seminar: Michael Freedman
DESCRIPTION:CMSA Q&A Seminar \nSpeaker: Michael Freedman\, Harvard CMSA \nTopic: Broad perspective on manifolds: all dimensions\, all structures\, classification and dynamics
URL:https://live-hu-cmsa-222.pantheonsite.io/event/cmsaqa_103024/
LOCATION:Common Room\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:CMSA Q&A Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Q-A-Seminar-10.30.2024.docx-1.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241029T161500
DTEND;TZID=America/New_York:20241029T181500
DTSTAMP:20241015T150203Z
CREATED:20240917T160658Z
LAST-MODIFIED:20241015T150203Z
UID:10003511-1730218500-1730225700@live-hu-cmsa-222.pantheonsite.io
SUMMARY:Boundaries and duality for 3d gauge theories
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeaker: Ben Gammage\, Harvard University \nTitle: Boundaries and duality for 3d gauge theories \nAbstract: 3d N=4 supersymmetric gauge theory has a pair of topological twists\, the A-model and B-model\, the latter of which is also known as Rozansky-Witten theory. Conjecturally\, boundary conditions for these TFTs ought to admit descriptions in terms of (microlocal) perverse or coherent sheaves of categories\, respectively. Unfortunately\, neither of these admits a general mathematical definition; nevertheless\, in some cases these are well-defined 2-categories. We will survey these situations and the duality\, known as 3d mirror symmetry\, which relates the A- and B-models of different theories\, together with its relation to the relative Langlands duality of Ben-Zvi–Sakellaridis-Venkatesh.
URL:https://live-hu-cmsa-222.pantheonsite.io/event/quantumgeo_102924/
LOCATION:Science Center Hall E\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Geometry-Quantum-Theory-10.29.2024.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241023T120000
DTEND;TZID=America/New_York:20241023T130000
DTSTAMP:20241016T182816Z
CREATED:20241016T180943Z
LAST-MODIFIED:20241016T182816Z
UID:10003531-1729684800-1729688400@live-hu-cmsa-222.pantheonsite.io
SUMMARY:CMSA Q&A Seminar: Dan Freed
DESCRIPTION:CMSA Q&A Seminar \nSpeaker: Dan Freed\, Harvard Mathematics & CMSA \nTopic: What are topological phases of matter?
URL:https://live-hu-cmsa-222.pantheonsite.io/event/cmsaqa_102324/
LOCATION:Common Room\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:CMSA Q&A Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Q-A-Seminar-10.23.2024.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241022T161500
DTEND;TZID=America/New_York:20241022T181500
DTSTAMP:20241007T195901Z
CREATED:20240917T160638Z
LAST-MODIFIED:20241007T195901Z
UID:10003510-1729613700-1729620900@live-hu-cmsa-222.pantheonsite.io
SUMMARY:Fusion 2-Categories and their Classification
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeaker: Thibault Décoppet\, Harvard University \nTitle: Fusion 2-Categories and their Classification \nAbstract: Categorifying the classical notion of fusion (1-)category\, fusion 2-categories were recently introduced. These objects have found many applications in Physics\, most notably to the classification of topological orders\, but also to the description of non-invertible symmetries in 2+1 dimensions. The first part of this talk will be devoted to reviewing the definition of a fusion 2-category and giving many examples. In the second half\, I will present a remarkable result concerning the Morita theory of fusion 2-categories and explain how it can be used to give a homotopy coherent classification of fusion 2-categories. \n 
URL:https://live-hu-cmsa-222.pantheonsite.io/event/quantumgeo_102224/
LOCATION:Science Center Hall E\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Geometry-Quantum-Theory-10.22.2024.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241016T120000
DTEND;TZID=America/New_York:20241016T130000
DTSTAMP:20241015T133655Z
CREATED:20241015T133229Z
LAST-MODIFIED:20241015T133655Z
UID:10003530-1729080000-1729083600@live-hu-cmsa-222.pantheonsite.io
SUMMARY:CMSA Q&A Seminar: Nazim Bouatta
DESCRIPTION:CMSA Q&A Seminar \nSpeaker: Nazim Bouatta (HMS) \nTopic: What are AlphaFold2 and OpenFold
URL:https://live-hu-cmsa-222.pantheonsite.io/event/cmsaqa_101624/
LOCATION:Common Room\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:CMSA Q&A Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Q-A-Seminar-10.16.2024.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241015T161500
DTEND;TZID=America/New_York:20241015T181500
DTSTAMP:20240927T182405Z
CREATED:20240917T162135Z
LAST-MODIFIED:20240927T182405Z
UID:10003514-1729008900-1729016100@live-hu-cmsa-222.pantheonsite.io
SUMMARY:Topological Modular Forms\, its equivariant refinements and relation with supersymmetric quantum field theories
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeaker: Mayuko Yamashita\, Kyoto University \nTitle: Topological Modular Forms\, its equivariant refinements and relation with supersymmetric quantum field theories \nAbstract: This talk is about the Segal-Stolz-Teichner program\, which is one of the most deep and interesting topics relating homotopy theory and physics. Mathematically\, they propose a geometric model of TMF\, the spectrum (in homotopy theory) of Topological Modular Forms\, in terms of supersymmetric quantum field theories. Their proposal\, although far from solid formulation or a proof\, has been a guiding principle leading us to many new interesting ideas and discoveries in both mathematics and physics. In this talk\, I will give an overview of this topic\, as well as my current works using equivariant twisted TMF.
URL:https://live-hu-cmsa-222.pantheonsite.io/event/quantumgeo_101524/
LOCATION:Science Center Hall E\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Geometry-Quantum-Theory-10.15.2024.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241009T120000
DTEND;TZID=America/New_York:20241009T130000
DTSTAMP:20241007T195958Z
CREATED:20241007T141752Z
LAST-MODIFIED:20241007T195958Z
UID:10003529-1728475200-1728478800@live-hu-cmsa-222.pantheonsite.io
SUMMARY:CMSA Q&A Seminar: Laura DeMarco
DESCRIPTION:CMSA Q&A Seminar \nSpeaker: Laura DeMarco\, Harvard University \nTopic: What is Teichmuller geometry and why is it important?
URL:https://live-hu-cmsa-222.pantheonsite.io/event/cmsaqa_10924-2/
LOCATION:Common Room\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:CMSA Q&A Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Q-A-Seminar-10.9.2024.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241008T161500
DTEND;TZID=America/New_York:20241008T181500
DTSTAMP:20241004T150540Z
CREATED:20240917T160554Z
LAST-MODIFIED:20241004T150540Z
UID:10003509-1728404100-1728411300@live-hu-cmsa-222.pantheonsite.io
SUMMARY:Skein traces and curve counting
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeaker: Sunghyuk Park\, Harvard CMSA \nTitle: Skein traces and curve counting \nAbstract: Skein modules are vector space-valued invariants of 3-manifolds describing the space of line defects modulo skein relations (determined by a choice of a ribbon category). When the 3-manifold is S x I for some surface S\, the skein module has a natural algebra structure and is called the skein algebra of S. \nIn 2010\, Bonahon and Wong constructed an algebra embedding (named “quantum trace”) of the sl_2 skein algebra into a quantum cluster variety called the “quantum Teichmuller space” for punctured surfaces\, which has applications to the representation theory of skein algebras. \nIn the first half of this talk\, I will give an overview of these concepts and explain how the quantum trace map can be generalized to the 3-dimensional setup. \nIn the second half\, I will discuss how everything above can be generalized to HOMFLYPT skeins and has natural interpretation in terms of counts of holomorphic curves.
URL:https://live-hu-cmsa-222.pantheonsite.io/event/quantumgeo_10824/
LOCATION:Science Center Hall E\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Geometry-Quantum-Theory-10.8.2024.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241001T161500
DTEND;TZID=America/New_York:20241001T181500
DTSTAMP:20240927T182238Z
CREATED:20240916T141133Z
LAST-MODIFIED:20240927T182238Z
UID:10003506-1727799300-1727806500@live-hu-cmsa-222.pantheonsite.io
SUMMARY:Topological Invariants of gapped states through cosheaves
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeaker: Bowen Yang\, Harvard CMSA \nTitle: Topological Invariants of gapped states through cosheaves \nAbstract: We provide a proper mathematical framework for the constructions of topological invariants of gapped quantum states and interpret topological invariants of gapped states as lattice analogs of ’t Hooft anomalies in Quantum Field Theory. Our secondary goal is to generalize this construction in various directions. In particular\, we show how to define topological invariants of lattice spin systems living on well-behaved subsets of the lattice.
URL:https://live-hu-cmsa-222.pantheonsite.io/event/quantumgeo_10124/
LOCATION:Science Center Hall E\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Geometry-Quantum-Theory-10.1.2024.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240924T161500
DTEND;TZID=America/New_York:20240924T181500
DTSTAMP:20240924T145311Z
CREATED:20240907T180814Z
LAST-MODIFIED:20240924T145311Z
UID:10003455-1727194500-1727201700@live-hu-cmsa-222.pantheonsite.io
SUMMARY:Symplectic duality in examples
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeaker: Vasily Krylov\, Harvard CMSA & Math \nTitle: Symplectic duality in examples \nAbstract: Over the past twenty years\, mathematicians and physicists have shown increasing interest in studying certain Poisson varieties\, known as “symplectic singularities.” Many of these objects naturally arise as Higgs or Coulomb branches of certain TQFTs and\, therefore\, fall within the framework of 3D mirror symmetry\, also known as symplectic duality. The first part of the talk will provide a gentle introduction to the theory of symplectic singularities\, with an emphasis on various examples. In the second part\, we will discuss how the symplectic duality works in examples\, beginning with the simplest cases. We will then discuss a particular phenomenon called the Hikita-Nakajima conjecture\, which predicts a deep and nontrivial relationship between dual varieties. It is particularly intriguing that this conjecture was formulated by mathematicians and still requires further understanding from a physical perspective.
URL:https://live-hu-cmsa-222.pantheonsite.io/event/quantumgeo_92424/
LOCATION:Science Center Hall E\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://live-hu-cmsa-222.pantheonsite.io/media/CMSA-Geometry-Quantum-Theory-09.24.2024.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240918T090000
DTEND;TZID=America/New_York:20240918T103000
DTSTAMP:20250328T150446Z
CREATED:20240904T181255Z
LAST-MODIFIED:20250328T150446Z
UID:10003442-1726650000-1726655400@live-hu-cmsa-222.pantheonsite.io
SUMMARY:CMSA/Tsinghua Math-Science Literature Lecture: Marc Lackenby
DESCRIPTION:CMSA/Tsinghua Math-Science Literature Lecture \nDate: Wednesday\, September 18\, 2024 \nTime: 9:00 – 10:30 am ET \nLocation: Via Zoom Webinar \nSpeaker: Marc Lackenby\, University of Oxford \nTitle: The complexity of knots \nAbstract: In his final paper in 1954\, Alan Turing wrote `No systematic method is yet known by which one can tell whether two knots are the same.’ Within the next 20 years\, Wolfgang Haken and Geoffrey Hemion had discovered such a method. However\, the computational complexity of this problem remains unknown. In my talk\, I will give a survey on this area\, that draws on the work of many low-dimensional topologists and geometers. Unfortunately\, the current upper bounds on the computational complexity of the knot equivalence problem remain quite poor. However\, there are some recent results indicating that\, perhaps\, knots are more tractable than they first seem. Specifically\, I will explain a theorem that provides\, for each knot type K\, a polynomial p_K with the property that any two diagrams of K with n_1 and n_2 crossings differ by at most p_K(n_1) + p_K(n_2) Reidemeister moves. \n\nBeginning in Spring 2020\, the CMSA began hosting a lecture series on literature in the mathematical sciences\, with a focus on significant developments in mathematics that have influenced the discipline\, and the lifetime accomplishments of significant scholars.
URL:https://live-hu-cmsa-222.pantheonsite.io/event/mathscilit2024_ml/
LOCATION:Virtual
CATEGORIES:Math Science Literature Lecture Series,Public Lecture,Special Lectures
ATTACH;FMTTYPE=image/jpeg:https://live-hu-cmsa-222.pantheonsite.io/media/Mathlit_Lackenby_8.5x11.jpg
END:VEVENT
END:VCALENDAR