BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Miranda Cheng (Academia Sinica/University of Amsterdam) DTSTART:20210915T150000Z DTEND:20210915T160000Z DTSTAMP:20260414T173454Z UID:BUGeom/29 DESCRIPTION:Title: Three-Manifolds\, Quantum Modular Forms and log VOAs\nby Miranda Cheng (Academia Sinica/University of Amsterdam) as part of Boston University Ge ometry/Physics Seminar\n\nLecture held in Zoom meeting ID: 937 3195 9866.\ n\nAbstract\nQuantum modular forms are\, roughly speaking\, functions that have certain weak modular properties. Mock modular forms and false theta functions are examples of holomorphic functions on the upper-half plane wh ich lead to quantum modular forms. Generalising the Witten-Reshetikhin-Tur aev invariants for three-manifolds which arise from Chern-Simons theory\, a new topological invariant named homological blocks which arise from 6d S CFT have been proposed a few years ago. My talk aims to explain the recent observations on the quantum modular properties of the homological blocks\ , as well as the relation to logarithmic vertex algebras. The talk will be based on a series of work in collaboration with Sungbong Chun\, Ioana Com an Lohi\, Boris Feigin\, Francesca Ferrari\, Sergei Gukov\, Sarah Harrison \, Davide Passaro\, and Gabriele Sgroi.\n LOCATION:https://researchseminars.org/talk/BUGeom/29/ END:VEVENT END:VCALENDAR