A modal foundation for meta-variables
Aleksandar Nanevski, Brigitte Pientka, Frank Pfenning · 2003
We report on work in progress regarding a foundation for the notion of meta-variable in logical frameworks and type theories. Our proposal is to treat meta-variables as modal variables in a modal type theory, which is logically clean and justifies several low-level implementation techniques for meta-variables. We also speculate on other logical extensions of our modal type theory, at present without clear applications.