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explainingmaths.wordpress.com
| | thehousecarpenter.wordpress.com
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| | NB: I've opted to just get straight to the point with this post rather than attempting to introduce the subject first, so it may be of little interest to readers who aren't already interested in proving the completeness theorem for propositional logic. A PDF version of this document is available here. The key thing I...
| | www.logicmatters.net
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| | 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 [...]
| | divisbyzero.com
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| | In my next real analysis lecture, we'll be discussing the Bolzano-Weierstrass theorem. (It says that any bounded sequence of real numbers contains a convergent subsequence.) I'll be showing my class this video in which Steve Sawin(AKA Slim Dorky) raps the complete proof of the theorem. https://www.youtube.com/watch?v=dfO18klwKHg You can read the lyrics here. He has some...
| | cronokirby.com
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| Exploring 3 different ways of encoding the natural numbers - Read more: https://cronokirby.com/posts/2020/08/encoding-the-naturals/