Erdős problem 16
Is the set of odd integers not of the form the union of an infinite arithmetic progression and a set of density ?
Sources
FormalConjectures/ErdosProblems/
16.lean
Retained formal statement
Using covering congruences Erdős [Er50] proved that the set of odd integers which are not of this form contains an infinite arithmetic progression.
∃ a, ∃ d > 0, {x | ∃ m, x = a + m * d} ⊆ Erdos16.Erdos16SetSolvedStatement only, no proof