lean_workbook_plus_21691
DisprovedPreamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_21691 : ∀ x y z : ℝ, x ^ 2 + y ^ 2 + z ^ 2 + 3 ≥ 2 * (x * y + y * z + z * x) := by sorry
Source
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_21691 : ∀ x y z : ℝ, x ^ 2 + y ^ 2 + z ^ 2 + 3 ≥ 2 * (x * y + y * z + z * x) := by sorry