BEGIN:VCALENDAR
VERSION:2.0
PRODID:researchseminars.org
CALSCALE:GREGORIAN
X-WR-CALNAME:researchseminars.org
BEGIN:VEVENT
SUMMARY:Marc Lackenby (Prof.)
DTSTART:20260819T150000Z
DTEND:20260819T160000Z
DTSTAMP:20260805T024928Z
UID:th21/8
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/th21/8/">Kno
 ts\, Links\, and Polynomial Bounds</a>\nby Marc Lackenby (Prof.) as part o
 f Theorems of the 21st Century Seminar\n\nInteractive livestream: https://
 teams.microsoft.com/meet/368108940453229?p=N3MMVUmzeHslp4wjva\nLecture hel
 d in Online only.\n\nAbstract\nProf. Marc Lackenby is a leading mathematic
 ian in topology\, geometry\, and group theory\, with major contributions t
 o knot theory and low-dimensional topology. In this talk\, he will discuss
  Reidemeister moves\, the elementary transformations that relate different
  diagrams of the same knot or link\, and the question of how efficiently o
 ne can pass between such diagrams. The talk will highlight his polynomial 
 bounds for simplifying diagrams of the unknot\, and explain recent work ex
 tending these ideas to every fixed link type. It will also describe the co
 nsequences for the computational complexity of recognizing knots and links
 . See the blog announcement https://functor.network/user/3333/entry/1896 o
 f this talk for more details.\n
LOCATION:https://researchseminars.org/talk/th21/8/
URL:https://teams.microsoft.com/meet/368108940453229?p=N3MMVUmzeHslp4wjva
END:VEVENT
END:VCALENDAR