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kakeya_2d
Specification
The two-dimensional case, proved by Davies [Da71]. [Da71] Davies, R. O., _Some remarks on the Kakeya problem_. Math. Proc. Cambridge Philos. Soc. 69 (1971), no. 3, 417–421.
Lean 4 Statement
theorem kakeya_2d : KakeyaSetConjectureDim 2
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