<p>This is the web site for the early stages of a book introducing both machine-checked proof with <ahref="http://coq.inria.fr/">the Coq proof assistant</a> and approaches to formal reasoning about program correctness.</p>
<h2>Grab a Draft</h2>
<ul>
<li><ahref="https://github.com/achlipala/frap">Source on GitHub</a></li>
<li><ahref="fraplib.tgz">Quasi-latest source-code tarball, library only</a> (warning: the author really does not recommend using it in serious projects!)</li>
<li>6.822 at MIT (<ahref="https://frap.csail.mit.edu/">Spring 2022</a>, Spring 2021, Spring 2020, Spring 2018, Spring 2017 [as 6.887], Spring 2016 [as 6.887])</li>