English
For a : Sort*, b,c : Prop, a → b ∨ c ⇔ (a → b) ∨ (a → c).
Русский
Для любого типа a : Sort*, b,c : Prop, a → b ∨ c эквивалентно (a → b) ∨ (a → c).
LaTeX
$$$a \rightarrow (b \lor c) \leftrightarrow ((a \rightarrow b) \lor (a \rightarrow c))$$$
Lean4
theorem imp_or' {a : Sort*} {b c : Prop} : a → b ∨ c ↔ (a → b) ∨ (a → c) :=
open scoped Classical in Decidable.imp_or'