A Non-sticky Kakeya Set of Lebesgue Measure Zero

The Kakeya set conjecture in ℝ³ was recently resolved by Wang and Zahl. The distinction between sticky and non-sticky Kakeya sets plays an important role in their proof. Although the proof did not require the Kakeya set to be Lebesgue measure zero, measure zero Kakeya sets are the crucial case whose study is required to resolve the conjecture. In this paper, we explicitly construct a non-sticky Kakeya set of Lebesgue measure zero in ℝ² (and hence in any dimension). We also construct a non-trivial sticky Kakeya set in high dimension that is not formed by taking the Cartesian product of a low-dimensional Kakeya set with ℝ^d-2, and we verify that this Kakeya set has Hausdorff dimension d. This is a joint work with Adeline Wong.