Dependent Types

In a 'place to do maths' we would like to be able to express and 'prove' the statement

There exists a natural that is even. This requires the notion of a _predicate. In general a predicate on a type A is a term of type A → Type u, for example

isEven : ℕ → Type u
isEven n = ?

324 B Raw Blame History Unescape Escape

Dependent Types

324 B

Raw Blame History