BEGIN:VCALENDAR
VERSION:2.0
PRODID:researchseminars.org
CALSCALE:GREGORIAN
X-WR-CALNAME:researchseminars.org
BEGIN:VEVENT
SUMMARY:Karim Adiprasito (Department of Mathematical Sciences\, University
  of Copenhagen)
DTSTART:20211101T150000Z
DTEND:20211101T163000Z
DTSTAMP:20260404T095357Z
UID:IMSAC/1
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/IMSAC
 /1/">Lefschetz theorems beyond Hodge structures</a>\nby Karim Adiprasito (
 Department of Mathematical Sciences\, University of Copenhagen) as part of
  IMSAC Distinguished Lecture Series\n\n\nAbstract\nOne of the key developm
 ents in combinatorics and algebra of recent years has been the discovery o
 f Lefschetz principles beyond Hodge structures\, resolving several long-st
 anding conjectures. I will provide an overview over recent developments\, 
 and discuss joint work with Johanna Steinmeyer\, Stavros Papadakis and Vas
 iliki Petrotou.\n
LOCATION:https://stable.researchseminars.org/talk/IMSAC/1/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Karim Adiprasito (Department of Mathematical Sciences\, University
  of Copenhagen)
DTSTART:20211102T150000Z
DTEND:20211102T163000Z
DTSTAMP:20260404T095357Z
UID:IMSAC/2
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/IMSAC
 /2/">Lefschetz theorems beyond Hodge structures</a>\nby Karim Adiprasito (
 Department of Mathematical Sciences\, University of Copenhagen) as part of
  IMSAC Distinguished Lecture Series\n\n\nAbstract\nOne of the key developm
 ents in combinatorics and algebra of recent years has been the discovery o
 f Lefschetz principles beyond Hodge structures\, resolving several long-st
 anding conjectures. I will provide an overview over recent developments\, 
 and discuss joint work with Johanna Steinmeyer\, Stavros Papadakis and Vas
 iliki Petrotou\n
LOCATION:https://stable.researchseminars.org/talk/IMSAC/2/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Don Zagier (International Centre for Theoretical Physics)
DTSTART:20211029T143000Z
DTEND:20211029T160000Z
DTSTAMP:20260404T095357Z
UID:IMSAC/3
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/IMSAC
 /3/">From Knots to Number Theory II</a>\nby Don Zagier (International Cent
 re for Theoretical Physics) as part of IMSAC Distinguished Lecture Series\
 n\n\nAbstract\nFirst talk: https://www.youtube.com/watch?v=Moq1pJp0f9g\n\n
 Abstract\nDuring the course of the last few years a number of startling co
 nnections between quantum invariants of knots and 3-manifolds and high-lev
 el number theory have emerged. Already the rigidity theorems of 3-dimensio
 nal hyperbolic topology\, which have been known for many years\, had a qui
 te non-trivial arithmetic content\, with the volume of every hyperbolic 3-
 manifold being linked via the dilogarithm to the so-called Bloch group and
  algebraic K-theory\, and another connection comes from the Kashaev invari
 ant\, which is linked via his famous conjecture to the hyperbolic volume b
 ut also belongs to the so-called Habiro ring\, which is a beautiful number
 -theoretical object that is not yet well known to number theorists. The mo
 re recent developments that I will describe concern even deeper links to a
 lgebraic number theory (construction of non-trivial units) and algebraic K
 -theory\, to a generalization of the classical Habiro ring to Habiro rings
  associated to arbitrary algebraic number fields\, and above all to surpri
 sing “quantum modularity” properties of the Kashaev invariant and its 
 generalizations leading to a new type of object in the theory of modular f
 orms. All of the work that will be reported on is joint with Stavros Garou
 falidis\, and some of it also with Rinat Kashaev and with Peter Scholze.\n
 \nThe lectures are intended for a general mathematical audience and do not
  require any prior knowledge of knot theory\, K-theory\, modular forms the
 ory\, or any other theory.\n
LOCATION:https://stable.researchseminars.org/talk/IMSAC/3/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dennis Gaitsgory (Harvard University)
DTSTART:20211108T150000Z
DTEND:20211108T163000Z
DTSTAMP:20260404T095357Z
UID:IMSAC/4
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/IMSAC
 /4/">Geometric Langlands I</a>\nby Dennis Gaitsgory (Harvard University) a
 s part of IMSAC Distinguished Lecture Series\n\n\nAbstract\nWe will start 
 these series by reviewing the general framework of geometric Langlands cor
 respondence\, and state the main conjectures in the de Rham and Betti sett
 ings. We will also recall V. Lafforgue’s theorem about the spectral deco
 mposition in the classical Langlands over function fields. We will then pr
 oceed to the formulation of “restricted” Langlands correspondence\, wh
 ich unifies the different contexts. We will state the restricted version o
 f the geometric Langlands conjecture\, and explain its relation with the c
 lassical Langlands conjecture via the operation of categorical trace.\n
LOCATION:https://stable.researchseminars.org/talk/IMSAC/4/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dennis Gaitsgory (Harvard University)
DTSTART:20211110T150000Z
DTEND:20211110T163000Z
DTSTAMP:20260404T095357Z
UID:IMSAC/5
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/IMSAC
 /5/">Geometric Langlands II</a>\nby Dennis Gaitsgory (Harvard University) 
 as part of IMSAC Distinguished Lecture Series\n\nAbstract: TBA\n
LOCATION:https://stable.researchseminars.org/talk/IMSAC/5/
END:VEVENT
END:VCALENDAR