discu
Newsletters
Mentions
Extension
Pricing
Login
Sign Up
Hacker News
Forall X – An Introduction to Formal Logic
https://www.fecundity.com/logic/download.html
9 comments
16/11/2022
Reddit
An Introduction to Formal Logic -- open access textbook under creative commons
http://www.fecundity.com/logic/
4 comments
17/9/2014
philosophy
Free logic textbook
http://www.fecundity.com/codex/forallx.pdf
45 comments
11/2/2013
philosophy