BEGIN:VCALENDAR
VERSION:2.0
PRODID:researchseminars.org
CALSCALE:GREGORIAN
X-WR-CALNAME:researchseminars.org
BEGIN:VEVENT
SUMMARY:Ciprian Manolescu (Stanford University)
DTSTART:20241127T133000Z
DTEND:20241127T150000Z
DTSTAMP:20260404T095117Z
UID:GT_IPM/1
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/GT_IP
 M/1/">Generalizations of Rasmussen’s invariant</a>\nby Ciprian Manolescu
  (Stanford University) as part of IPM Geometry and Topology Seminar\n\n\nA
 bstract\nOver the last 20 years\, the Rasmussen invariant of knots in S^3 
 has had a number of interesting applications to questions about surfaces i
 n B^4. In this talk I will survey some recent extensions of the invariant 
 to knots in other three-manifolds: in connected sums of S^1 x S^2 (joint w
 ork with Marengon\, Sarkar\, and Willis)\, in RP^3 (joint work with Willis
 \, and also separate work of Chen)\, and in a general setting (work by Mor
 rison\, Walker and Wedrich\; and independently by Ren-Willis). I will desc
 ribe how these invariants give bounds on the genus of smooth surfaces in 4
 -manifolds\, and can even detect exotic 4-manifolds with boundary.\n\nhttp
 s://www.zoom.us/join\nMeeting ID: 935 6306 2335\nPasscode: 304145\n
LOCATION:https://stable.researchseminars.org/talk/GT_IPM/1/
END:VEVENT
BEGIN:VEVENT
SUMMARY:William Hide (Oxford University)
DTSTART:20241204T120000Z
DTEND:20241204T133000Z
DTSTAMP:20260404T095117Z
UID:GT_IPM/2
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/GT_IP
 M/2/">Small eigenvalues of hyperbolic surfaces</a>\nby William Hide (Oxfor
 d University) as part of IPM Geometry and Topology Seminar\n\n\nAbstract\n
 We study the spectrum of the Laplacian on finite-area hyperbolic surfaces 
 of large volume\, focusing on small eigenvalues i.e. those below 1/4. I wi
 ll discuss some recent results and open problems in this area. \nBased on 
 joint works with Michael Magee and with Joe Thomas.\n\nhttps://www.zoom.us
 /join\nMeeting ID: 819 4967 6990\nPasscode: 362880\n
LOCATION:https://stable.researchseminars.org/talk/GT_IPM/2/
END:VEVENT
END:VCALENDAR