Summary: On Extensions to Definitional Equality in Agda
Or: Making Agda See More
Andreas Abel
Department of Computer Science
Ludwig-Maximilians-University Munich
10th Agda Implementors' Meeting
Gothenburg, Sweden
15 September 2009
Andreas Abel (LMU Munich) Definitional Equality AIM-10 2009 1 / 13
Eta-Expansion Data Types
A Problem on the Agda List
Conor foo type-checks, but boo does not.
data Unit : Set where
unit : Unit
T : Unit -> Set
T unit = Nat
foo : (x : Unit) -> T x
foo unit = 0
boo : (x : Unit) -> T x
boo x = 0

Source: Abel, Andreas - Theoretische Informatik, Ludwig-Maximilians-Universität München

Collections: Computer Technologies and Information Sciences