Philosophers 2
Conditionals and Entailment 7
Contradiction and Inconsistency 5
Identity 5
Informal Logic 17
Logic and Knowledge 5
Logic and Ontology 8
Paradoxes 15
Philosophical Analysis 8
Problem of Induction 5
Semantics of Logic 7
Truth Definitions 11
Vagueness 10
| | Logic and Foundations - Math, Science 831
Critical Thinking - Skeptical Inquiry, Science in Society, Science 25
Mathematics - Philosophy of Science, Philosophy, Society 36
 Dead Logicians SocietyDead Logicians Society
 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.
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Frege's TheoremFrege's Theorem
 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.
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Humboldt State University: Argumentation and Critical Thinking TutorialHumboldt State University: Argumentation and Critical Thinking Tutorial
 Jay VerLinden's resource offering reviews and tests on important concepts in formal logic.
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LogicLogic
 An online textbook by Garth Kemerling, explaining the basic elements of elementary logic at an undergraduate level.
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Logic and MathematicsLogic and Mathematics
 Essay on the nature of logic and its relationship to the philosophy of mathematics, written by Stephen G. Simpson.
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The Logic CourseThe Logic Course
 An interactive course in formal logic, with tutorials and quizzes on critical thinking, truth-tables, and sentential.
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Nordic Journal of Philosophical Logic (NJPL)Nordic Journal of Philosophical Logic (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.
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Peirce's LogicPeirce's Logic
 Article in the Stanford Encyclopaedia of Philosophy, by Eric Hammer.
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PHILOGPHILOG
 The Danish Network for Philosophical Logic and its Applications.
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Symbolic LogicSymbolic Logic
 Online resources provided to supplement undergraduate course taught by Peter Suber. Good collection of handouts.
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Tips on Translating English into First-Order LogicTips on Translating English into First-Order Logic
 An introductory guide by Peter Suber.
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Why Aristotelian Logic does not WorkWhy Aristotelian Logic does not Work
 An essay at Abelard.org outlining an argument against Aristotelian syllogistic.
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