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Theorems · Theorem · number theory

Rat.AbsoluteValue.eq_one_of_not_dvd

∀ {f : AbsoluteValue ℚ ℝ},
  (∀ (n : ℕ), f ↑n ≤ 1) →
    ∀ {p : ℕ}, 0 < f ↑p → f ↑p < 1 → (∀ (m : ℕ), 0 < f ↑m ∧ f ↑m < 1 → p ≤ m) → ∀ {m : ℕ}, ¬p ∣ m → f ↑m = 1

A natural number not divisible by p has absolute value 1.

Defined in
Mathlib.NumberTheory.Ostrowski
Cited by
1 results in Mathlib
Foundations
Depth 199 from the axioms · uses propext, Classical.choice, Quot.sound

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