The Four Dimensional Light Bulb Theorem

25 October 2019
David Gabai

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The Oxford Mathematics Colloquia are generously sponsored by Oxford University Press.



We discuss a recent generalization of the classical 3-dimensional light bulb theorem to 4-dimensions. We connect this with fundamental questions about knotting of surfaces in 4-dimensional manifolds as well as new directions regarding knotting of 3-balls in 4-manifolds.