Practical Verification of QuadTrees

Agda2hs is a program which compiles a subset of Agda to Haskell. In this paper, an implementation of the Haskell library QuadTree is created and verified in this subset of Agda, such that Agda2hs can then produce a verified Haskell implementation. To aid with this verification, a number of techniques have been proposed which are used to prove...