English
There exists a canonical isomorphism between the free monoid on α and the list algebra List α, given by the identity equivalence.
Русский
Существует каноническое изоморождение свободного моноида на α и списка List α, задаваемое тождественным эквивалентом.
LaTeX
$$$ FreeMonoid\\,\\alpha \\cong List\\,\\alpha $$$
Lean4
/-- The identity equivalence between `FreeMonoid α` and `List α`. -/
@[to_additive /-- The identity equivalence between `FreeAddMonoid α` and `List α`. -/
]
def toList : FreeMonoid α ≃ List α :=
Equiv.refl _