Erdős problem 7
Can there be a finite covering system of the integers with distinct moduli, all of which are odd and greater than ?
Sources
FormalConjectures/ErdosProblems/
7.lean
Retained formal statement
Is there a covering system all of whose moduli are odd (and greater than 1)?
True ↔ ∃ C, ∀ (i : C.ι), ¬C.moduli i ≤ Ideal.span {2} ∧ C.moduli i ≠ ⊤OpenStatement only, no proof