BEGIN:VCALENDAR
VERSION:2.0
PRODID:researchseminars.org
CALSCALE:GREGORIAN
X-WR-CALNAME:researchseminars.org
BEGIN:VEVENT
SUMMARY:Andrew Harder (Lehigh)
DTSTART:20200904T140000Z
DTEND:20200904T150000Z
DTSTAMP:20260423T005800Z
UID:notts_ag/23
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/notts_ag/23/
 ">Log symplectic pairs and mixed Hodge structures</a>\nby Andrew Harder (L
 ehigh) as part of Online Nottingham algebraic geometry seminar\n\n\nAbstra
 ct\nA log symplectic pair is a pair $(X\,Y)$ consisting of a smooth projec
 tive variety $X$ and a divisor $Y$ in $X$ so that there is a non-degenerat
 e log $2$-form on $X$ with poles along $Y$. I will discuss the relationshi
 p between log symplectic pairs and degenerations of hyperkaehler varieties
 \, and how this naturally leads to a class of log symplectic pairs called 
 log symplectic pairs of "pure weight". I will discuss results which show t
 hat the classification of log symplectic pairs of pure weight is analogous
  to the classification of log Calabi-Yau surfaces. Time permitting\, I'll 
 discuss two classes of log symplectic pairs which are related to real hype
 rplane arrangements and which admit cluster type structures.\n
LOCATION:https://researchseminars.org/talk/notts_ag/23/
END:VEVENT
END:VCALENDAR