lean_workbook_plus_79087

Proved

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

Given that $mn$ is even, prove that one of $m$ or $n$ must be even.

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_79087 {m n : ℤ} (h : Even (m * n)) : Even m ∨ Even n   :=  by sorry

Source