Erdős problem 955

If $A\subset \mathbb{N}$ has density $0$ then $s^{-1}(A)$ must also have density $0$ .

No current result

No reviewed Result is current in Vela Mathematics Program. Retained source material is shown below.

FormalConjectures/ErdosProblems/955.lean

Formal Conjectures

FormalConjectures/ErdosProblems/955.leanErdos955.erdos_9551 lineExact file

1True ↔ ∀ (A : Set ℕ), A.HasDensity 0 → {x | Erdos955.s x ∈ A}.HasDensity 0

OpenStatement only, no proof