Fitch proofs download files
This is a demo of a proof checker for Fitch-style natural deduction systems found in many popular introductory logic textbooks. The specific system used here is Download. Coq version 8.4pl6. This version features: a new modular and uniform extension of the addition of eta-conversion to the logic;; a slightly more flexible guard condition for fixpoints; For a full log of changes, see the file CHANGES.