lean_workbook_plus_18633
ProvedLemma.
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_18633 : ∀ x y z : ℝ, x * y + y * z + z * x ≤ x ^ 2 + y ^ 2 + z ^ 2 := by sorry
Source
Lemma.
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_18633 : ∀ x y z : ℝ, x * y + y * z + z * x ≤ x ^ 2 + y ^ 2 + z ^ 2 := by sorry