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SUMMARY:Ozgun Unlu (Bilkent University)
DTSTART:20260427T123000Z
DTEND:20260427T133000Z
DTSTAMP:20260525T015501Z
UID:BilTop/136
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/BilTop/136/"
 >Counterexamples to the Oozing Conjecture</a>\nby Ozgun Unlu (Bilkent Univ
 ersity) as part of Bilkent Topology Seminar\n\nLecture held in SA 141.\n\n
 Abstract\nI will begin with a brief introduction to surgery theory and ass
 embly maps. I will then discuss joint work with Ian Hambleton\, in which w
 e construct counterexamples to the Oozing conjecture. The Oozing Conjectur
 e predicts that Arf-type surgery obstructions do not produce new classes u
 nder sufficiently high-codimension products. Examples of Morgan–Pardon a
 nd Cappell–Shaneson exhibit non-triviality in codimensions 2 and 3\, res
 pectively. We give a new example in codimension 4.\n
LOCATION:https://researchseminars.org/talk/BilTop/136/
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