Journal of Automated Reasoning

, Volume 51, Issue 4, pp 357–370 | Cite as

Proof Pearl—A Mechanized Proof of GHC’s Mergesort

  • Christian Sternagel
Open Access


We present our Isabelle/HOL formalization of GHC’s sorting algorithm for lists, proving its correctness and stability. This constitutes another example of applying a state-of-the-art proof assistant to real-world code. Furthermore, it allows users to take advantage of the formalized algorithm in generated code.


Mergesort Theorem proving Code generation 


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Copyright information

© The Author(s) 2012

Authors and Affiliations

  1. 1.School of Information ScienceJapan Advanced Institute of Science and TechnologyNomiJapan

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