Propositions as Types, Philip Wadler. Draft, March 2014.

The principle of Propositions as Types links logic to computation. At first sight it appears to be a simple coincidence---almost a pun---but it turns out to be remarkably robust, inspiring the design of theorem provers and programming languages, and continuing to influence the forefronts of computing. Propositions as Types has many names and many origins, and is a notion with depth, breadth, and mystery.

Philip Wadler has written a very enjoyable (*Like busses: you wait two thousand years for a definition of â€œeffectively calculableâ€, and then three come along at once*) paper about propositions as types that is accessible to PLTlettantes.

## Recent comments

1 hour 18 min ago

1 hour 55 min ago

2 hours 40 min ago

2 hours 59 min ago

3 hours 23 min ago

3 hours 35 min ago

4 hours 6 min ago

4 hours 16 min ago

5 hours 9 min ago

5 hours 12 min ago