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jdh.hamkins.org
| | richardzach.org
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| | The eminent proof theorist and philosopher of mathematics William Walker ("Bill") Tait died March 15, 2024 in Chicago. He was 95. Bill was born on January 22, 1929, in Freeport, NY, and...
| | ncatlab.org
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| | www.logicmatters.net
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| | Logical notes and papers Some logical blog pieces Philosophy of maths: a reading list Does mathematics need a philosophy? Philosophical logic: five books from the back catalogue On Frege seeing what is in front of his nose. Begriffsschrift and absolutely unrestricted quantification What Frege didnt tell you Tarski on Truth, a thumbnail sketch Partial functions []
| | inquiryintoinquiry.com
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| 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...