Erdős problem 158
Let A be an infinite B₂[2] set. Must liminf |A ∩ {1, ..., N}| * N ^ (- 1 / 2) = 0?
Sources
FormalConjectures/ErdosProblems/
158.lean
Retained formal statement
Let A be an infinite B₂[2] set. Must liminf |A ∩ {1, ..., N}| * N ^ (- 1 / 2) = 0?
True ↔ ∀ (A : Set ℕ), A.Infinite → Erdos158.B2 2 A → Filter.liminf (fun N => ↑(A ∩ Set.Iio N).ncard * ↑N ^ (-1 / 2)) Filter.atTop = 0OpenStatement only, no proof