The following are some essays I've written on the subject of logic, which is one of my hobbies. I've also included some links to sites that students of logic might find interesting.
Mathematical Logic around the World
Factasia Logic
Logic Notation on the Web
Symbolic Logic (Suber)
Logic Calculator (Oruç)
12th Century Logic
Logic (from Catholic Encyclopedia)
Christianity & Logic
Logic Machine for Syllogisms (Mårtensson's)
My essays:
Logical Algebra
The Sorites
Logical Calculus, Part 1
Logical Calculus, Part 2
Logical Calculus, Part 3
Relational Calculus
Predicate Calculus
Review and Essay on Gordon Clark's Logic
Existential Import
Logic (Kemerling)
Modal Logic (Stanford Encyclopedia of Philosophy)
Modal Logic (McCarthy)
Logic & Set Theory (Fife & Husch)
Logic & Set Theory Web Surfing Page (Flashman)
Existential Import (Hinman)
Lewis Carroll Homepage
Scholastic Logic (Perrier)
