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consequently.org
| | www.logicmatters.net

I'm revisiting a number of older logic books with a view to seeing if/how they should feature in the new edition of the Study Guide. Next up, the text by René Cori and Daniel Lascar, whose French original was published in 1993, later translated in two parts as Mathematical Logic (OUP, 2000). Its sub-title, "A [...]
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| | billwadge.com

The famous mathematician Kurt Gödel proved two "incompleteness" theorems. This is their story. By the 1930s logicians, especially Tarski, had figured out the semantics of predicate logic. Tarski described what exactly was an 'interpretation' and what it meant for a formula to be true in an interpretation. Briefly, an interpretation is a nonempty set (the...
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| | jdh.hamkins.org

Philosophy of Mathematics, Exam Paper 122, Oxford University Wednesdays 12-1 during term, Radcliffe Humanities Lecture Room Joel David Hamkins, Professor of Logic Lucy, Charles - Personifications o...
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| | inquiryintoinquiry.com

Introduction The praeclarum theorema, or splendid theorem, is a theorem of propositional calculus noted and named by G.W.Leibniz, who stated and proved it in the following manner. If a is b and d is c, then ad will be bc. This is a fine theorem, which is proved in this way: a is b, therefore...
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