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Colloquia

Kakeya sets in R^3

Hong Wang (Courant)

Location:  HILL 705
Date & time: Wednesday, 16 April 2025 at 3:45PM - 4:45PM

 A Kakeya set is a compact subset of R^n that contains a unit line segment pointing in every direction.  Kakeya set conjecture asserts that every Kakeya set has Minkowski and  Hausdorff dimension n. We prove this conjecture in R^3 as a consequence of a more general statement about union of tubes.   

This is joint work with Josh Zahl.