English
m^n is even iff m is even and n > 0.
Русский
m^n чётно тогда и только тогда, когда m чётно и n > 0.
LaTeX
$$$\operatorname{Even}(m^n) \iff (\operatorname{Even}(m) \land n \neq 0)$$$
Lean4
/-- If `m` and `n` are natural numbers, then the natural number `m^n` is even
if and only if `m` is even and `n` is positive. -/
@[parity_simps, grind =]
theorem even_pow : Even (m ^ n) ↔ Even m ∧ n ≠ 0 := by induction n with grind