# Formal Metatheory of Programming Languages in the Matita Interactive Theorem Prover

@article{Asperti2012FormalMO, title={Formal Metatheory of Programming Languages in the Matita Interactive Theorem Prover}, author={Andrea Asperti and Wilmer Ricciotti and Claudio Sacerdoti Coen and Enrico Tassi}, journal={Journal of Automated Reasoning}, year={2012}, volume={49}, pages={427-451} }

This paper is a report about the use of Matita, an interactive theorem prover under development at the University of Bologna, for the solution of the POPLmark Challenge, part 1a. We provide three different formalizations, including two direct solutions using pure de Bruijn and locally nameless encodings of bound variables, and a formalization using named variables, obtained by means of a sound translation to the locally nameless encoding. According to this experience, we also discuss some of…

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