Erdős problem 1084
Erdős conjectured that the triangular lattice is best possible in 2D, in particular that .
Sources
FormalConjectures/ErdosProblems/
1084.lean
Retained formal statement
Erdős claims the existence of two constants such that .
∃ c₁, ∃ c₂ > 0, ∀ᶠ (n : ℕ) in Filter.atTop, 6 * ↑n - c₁ * ↑n ^ (2 / 3) ≤ ↑(Erdos1084.f 3 n) ∧ ↑(Erdos1084.f 3 n) ≤ 6 * ↑n - c₂ * ↑n ^ (2 / 3)SolvedStatement only, no proof