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Theorems · Theorem · order theory

two_mul_le_add_of_sq_eq_mul

Deprecated since 2026-04-20Use two_mul_le_add_of_sq_le_mul instead.

∀ {R : Type u} [inst : CommSemiring R] [inst_1 : LinearOrder R] [ExistsAddOfLE R] [MulPosStrictMono R]
  [PosMulStrictMono R] [AddLeftReflectLE R] [AddLeftMono R] {a b r : R}, 0 ≤ a → 0 ≤ b → r ^ 2 = a * b → 2 * r ≤ a + b
Defined in
Mathlib.Algebra.Order.Ring.Unbundled.Basic
Cited by
0 results in Mathlib
Foundations
Depth 25 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
CommSemiringLinearOrderExistsAddOfLEMulPosStrictMonoPosMulStrictMonoAddLeftReflectLEAddLeftMono

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