fact: Definition SigAlgebra (σ : Signature) : Type := {c : Carriers σ | ∀ (u : Symbol σ), Operation c (σ u) }.
imports: HoTT.Utf8Minimal HoTT.Basics HoTT.Classes.implementations.ne_list HoTT.Classes.implementations.family_prod HoTT.Types HoTT.HSet HoTT.Classes.implementations.list