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erdos_723.prime_pow_is_projplane_order

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These always exist if $n$ is a prime power.

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Lean 4 Statement 
theorem erdos_723.prime_pow_is_projplane_order :
    ∀ n, IsPrimePow n → ∃ (P L : Type) (_ : Membership P L) (_ : Fintype P) (_ : Fintype L)
      (pp : ProjectivePlane P L), pp.order = n
ID: ErdosProblems__723__erdos_723.prime_pow_is_projplane_order
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