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Use this tag for questions about type theories, which are formal systems to specify properties of objects.

6 votes

How to represent mathematical partial functions in a type-theory based proof assistant?

I have written an entire blogpost on this topic, outlining a variety of solutions: https://lawrencecpaulson.github.io/2021/12/01/Undefined.html
Lawrence Paulson's user avatar
12 votes

What are the differences between MLTT and CIC?

The technical answers are correct, but they completely overlook the philosophical differences between the two formalisms. Martin-Löf type theory closely reflects Arendt Heyting's explanations of the l …
Lawrence Paulson's user avatar