Erdős problem 955 · problems.science

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

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12 retained statements2415f78e850a

FormalConjectures/ErdosProblems/

955.lean

Retained formal statement4 of 12

Pollack [Po14b] has shown that this is true if $A$ is the set of primes.

FormalConjectures/ErdosProblems/955.leanErdos955.erdos_955.variants.pollack_primes1 lineExact file

1{x | Nat.Prime (Erdos955.s x)}.HasDensity 0

SolvedStatement only, no proof