One element type. \begin{code} {-# OPTIONS --without-K --exact-split --safe --auto-inline #-} module MLTT.Unit where open import MLTT.Universes record 𝟙 {𝓤} : 𝓤 ̇ where constructor ⋆ open 𝟙 public unique-to-𝟙 : {A : 𝓤 ̇ } → A → 𝟙 {𝓥} unique-to-𝟙 {𝓤} {𝓥} a = ⋆ {𝓥} \end{code}