# Isomorphism invariance and isomorphism reflection in type theory (TYPES 2023)

- 15 June 2023
- Talks, Type theory

At TYPES 2023 I had the honor of giving an invited talk “On Isomorphism Invariance and Isomorphism Reflection in Type Theory” in which I discussed isomorphism reflection, which states that isomorphic types are judgementally equal. This strange principle is consistent, and it validates some fairly strange type-theoretic statements.

Here are **the slides with speaker notes** and **the video recording** of the talk.

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