# Modal completeness for the provability logic GL in HOL Light

(c) Copyright, Marco Maggesi, Cosimo Perini Brogi 2020-2022.

This repository contains a formal proof of the modal completeness
for the provability logic GL in HOL Light.

The top-level file is `make.ml`.

The main theorem is `COMPLETENESS_THEOREM_GEN` in file `completeness.ml`.