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DTSTART:20250309T070000
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DTSTART;TZID=America/Toronto:20251110T143000
SEQUENCE:0
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URL:https://uwaterloo.ca/pure-mathematics/events/pure-math-colloquium-60
SUMMARY:Pure Math Colloquium
CLASS:PUBLIC
DESCRIPTION:PATRICK NAYLOR\, MCMASTER UNIVERSITY \n\n_Doubling Gluck twists
 _\n\nThe Gluck twist of an embedded 2-sphere in the 4-sphere is a\n4-manif
 old that is homeomorphic but not obviously diffeomorphic to the\n4-sphere.
  Despite considerable study\, these strange manifolds have\nremained a lon
 g-standing source of potential counterexamples to the\nonly remaining case
  of the Poincaré conjecture. In this talk\, I will\ngive an overview of t
 his conjecture\, a visual introduction to\n2-dimensional knot theory\, and
  describe conditions that guarantee that\n(some) Gluck twists are standard
 \, i.e.\, diffeomorphic to the 4-sphere.\nThis is based on joint work with
  Dave Gabai and Hannah Schwartz.\n\nMC 5501
DTSTAMP:20260423T153504Z
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