One stabilization is not enough for contractible 4-manifolds

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Date: 12/2/22
Speaker :Sungkyung Kang

AGDT Seminar

Seminars

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    Abstract: We construct an example of a cork that remains exotic after taking a connected sum with S^2×S^2. Combined with a work of Akbulut-Ruberman, this implies the existence of an exotic pair of contractible 4-manifolds which remains absolutely exotic after taking a connected sum with S^2 × S^2.

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