論理学
/villagepump/@hoshihara#68a5bd6e0000000000c96c38
/sno2wman/論理学を独習したいあなたに
https://old.math.jp/wiki/数理論理学の参考書
Logic -- from Wolfram MathWorld
https://galaxy.opensyllabus.org/#!search/works/mathematical+logic
https://www.reddit.com/r/math/comments/1dgq8xg/opinion_on_open_logic_project_as_a_first_logic/
Open Logic Project
Logic I | Linguistics and Philosophy | MIT OpenCourseWare
Forall x
forall x: Calgary. A Free and Open Introduction to Formal Logic
https://forallx.openlogicproject.org/forallxyyc-solutions.pdf
solutions
Open Logic Projectより易しい
Barwise & Etchemendy
https://en.wikipedia.org/wiki/Language,_Proof_and_Logic
Peter Smith
https://www.logicmatters.net/
https://www.reddit.com/r/math/comments/1b7wplr/i_was_reading_peter_smith_logic_books_and/