BEGIN:VCALENDAR
VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VTIMEZONE
TZID:Europe/Vienna
BEGIN:DAYLIGHT
DTSTART:20250330T030000
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
TZNAME:CEST
END:DAYLIGHT
BEGIN:STANDARD
DTSTART:20251026T020000
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
TZNAME:CET
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTAMP:20260424T143333Z
UID:1747126800@ist.ac.at
DTSTART:20250513T110000
DTEND:20250513T160000
DESCRIPTION:Speaker: Anne Moreau\, Eleny Ionel & Lisa Sauermann\nhosted by 
 Tim Browning & Xujia Chen\nAbstract: Anne Moreau (https://www.imo.universi
 te-paris-saclay.fr/~moreau/)Université Paris-SaclayIsomorphisms between W
 -algebras to any vertex algebra one can attach invariants of different na
 ture: its automorphism group\, its character (a formal series)\, its assoc
 iated variety (a Poisson variety)\, etc. In this talk\, I will explain ho
 w to exploit the connection between these invariants to obtain nontrivial
  isomorphisms between W-algebras at admissible levels. To study a more g
 eneral setting\, one can use totally different technics developed more rec
 ently.  Eleny Ionel (https://math.stanford.edu/~ionel/)Stanford Universi
 tyModuli spaces of curves in 3-foldsSince their introduction in the eighti
 es\, the study of the moduli space of (pseudo)-holomorphic curves\, and in
  particular the Gromov-Witten invariants extracted from them\, have been a
  very powerful tool in symplectic geometry and topology. Motivated by stri
 ng theory considerations\, Gopakumar and Vafa conjectured that the Gromov-
 Witten invariants of Calabi-Yau 3-folds satisfy some surprising properties
 . In earlier joint work with Thomas Parker and more recently with Aleksand
 er Doan and Thomas Walpuski we proved a structure theorem for these invari
 ants which implies the Gopakumar-Vafa conjecture. This talk presents some
  of the background and key ingredients of our proof\, as well as recent pr
 ogress\, joint with Penka Georgieva\, towards proving that a similar struc
 ture theorem holds for the real Gromov-Witten invariants of Calabi-Yau 3-f
 olds with an anti-symplectic involution. Lisa Sauermann (http://www.iam.u
 ni-bonn.de/users/sauermann/home)University of BonnOn three-term progressio
 n-free sets and relatedquestions in additive combinatoricsGiven some larg
 e positive integer N\, what is the largest possible size of a subset of {1
 \,…\,N} which does not contain a three-term arithmetic progression (i.e.
 \, which does not contain three distinct elements x\,y\,z satisfying x+z=2
 y)? Similarly\, given a prime p and a large positive integer n\, what is t
 he largest possible size of a subset of the vector space F_p^n which does 
 not contain a three-term arithmetic progression? This talk will explain th
 e known bounds for these longstanding problems in additive combinatorics\,
  give an overview of the proof techniques\, and discuss applications of th
 ese techniques to other additive combinatorics problems.
LOCATION:Raiffeisen Lecture Hall\, ISTA
ORGANIZER:diana.gruber@ista.ac.at
SUMMARY:Anne Moreau\, Eleny Ionel & Lisa Sauermann: Women in Math
URL:https://talks-calendar.ista.ac.at/events/5760
END:VEVENT
END:VCALENDAR