Philosophy of Logic (Subscribe)
Links
Dead Logicians Society
http://www.freewebs.com/deadlogicianssociety/
Warwick university's very own logic society aiming to increase and stimulate interest in logic and philosophy of logic at the university. Offers news and events.
Frege's Theorem
http://plato.stanford.edu/entries/frege-logic/index.html
Article in the Stanford Encylcopaedia of Philosophy, entitled `Frege's Logic, Theorem, and Foundations for Arithmetic'. Discusses the 1980 discovery of Crispin Wright that Frege's work of the Grundgesetze can be carried out in second-order logic with Hume's principle.
Humboldt State University: Argumentation and Critical Thinking Tutorial
http://www.humboldt.edu/~act/HTML/
Jay VerLinden's resource offering reviews and tests on important concepts in formal logic.
Logic
http://www.philosophypages.com/lg/
An online textbook by Garth Kemerling, explaining the basic elements of elementary logic at an undergraduate level.
Logic and Mathematics
http://www.math.psu.edu/simpson/papers/philmath/
Essay on the nature of logic and its relationship to the philosophy of mathematics, written by Stephen G. Simpson.
Nordic Journal of Philosophical Logic (NJPL)
http://www.hf.uio.no/filosofi/njpl/
Edited at Dep. of Philosophy, Univ. of Oslo, published by Scandinavian U.P. in hard copy and on WWW. Full-text Web edition free for personal use.
Peirce's Logic
http://plato.stanford.edu/entries/peirce-logic/
Article in the Stanford Encyclopaedia of Philosophy, by Eric Hammer.
PHILOG
The Danish Network for Philosophical Logic and its Applications.
Symbolic Logic
http://www.earlham.edu/~peters/courses/log/loghome.htm
Online resources provided to supplement undergraduate course taught by Peter Suber. Good collection of handouts.
The Logic Course
http://www.thelogiccourse.com/
An interactive course in formal logic, with tutorials and quizzes on critical thinking, truth-tables, and sentential.
Tips on Translating English into First-Order Logic
http://www.earlham.edu/~peters/courses/log/transtip.htm
An introductory guide by Peter Suber.
Why Aristotelian Logic does not Work
http://www.abelard.org/category/category.htm
An essay at Abelard.org outlining an argument against Aristotelian syllogistic.