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Theorems · Theorem · order theory

one_add_mul_le_pow_of_sq_nonneg

∀ {R : Type u_1} [inst : Semiring R] [inst_1 : PartialOrder R] [IsOrderedRing R] {a : R},
  0 ≤ a ^ 2 → 0 ≤ (1 + a) ^ 2 → 0 ≤ 2 + a → ∀ (n : ℕ), 1 + ↑n * a ≤ (1 + a) ^ n

Bernoulli's inequality. This version works for semirings but requires additional hypotheses 0 ≤ a ^ 2 and 0 ≤ (1 + a) ^ 2.

Defined in
Mathlib.Algebra.Order.Ring.Pow
Cited by
2 results in Mathlib
Foundations
Depth 30 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
SemiringPartialOrderIsOrderedRing

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