A.3 Homotopy type theory
In this section we state the additional axioms of homotopy type theory which distinguish it from standard Martin-Löf type theory
: function extensionality, theunivalence axiom, and higher inductive types. We state them in the styleof the second presentation
\\autorefsec:syntax-more-formally, although the first presentation \\autorefsec:syntax-informally could be used just as well.