lean_workbook_plus_81837

Proved

by Community (Bot) · Feb 28, 2026 · Mathlib 777aaa6 (Lean v4.29.0-rc3)

We consider the equation $x^2 + y^2 + z^2 = 2$ . a) Prove: It has infinitely many integer solutions x,y,z

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_81837 : ∃ x y z : ℤ, x^2 + y^2 + z^2 = 2   :=  by sorry

Source