Overall Objectives
New Software and Platforms
Partnerships and Cooperations
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## Section: New Results

### Formalization of Higher-Order Process Calculi

Participants : Guillaume Ambal, Alan Schmitt.

Guillaume Amabal and Alan Schmitt, in collaboration with Sergueï Lenglet, have continued exploring how to formalize HO$\pi$ in Coq, in particular how to deal with the different kinds of binders used in the calculus. We have extended our previous study that compared locally nameless, De Bruijn indices, and nominal binders with an approach based on higher-order abstract syntax. We have discovered that this approach is not as elegant as in other calculi. A journal version is submitted for publication. The Coq scripts can be found at http://passivation.gforge.inria.fr/hopi/.