This site contains PDFs built from the source LaTeX files of the most recent version of the Open Logic Text. Complete PDFs We have PDFs of the complete text in the Open Logic master branch, arranged in a somewhat sensible manner, including editorial comments. It's not intended as a textbook, but it shows what's there. Open Logic Text, Complete Clean Version: one big PDF of all the material, withou
A Study GuideA re-titled, expanded version of the old Teach Yourself Logic study guide. This is a book length guide to the main topics and some suitable texts either for teaching yourself logic by individual self-study, or to supplement a university course. You only need to read just the first half-dozen pages to see if this is for you. Beginning Mathematical Logic: A Study Guide [corrected reprin
The Open Logic Project is a collection of teaching materials on mathematical logic aimed at a non-mathematical audience, intended for use in advanced logic courses as taught in many philosophy departments. It is open-source: you can download the LaTeX code. It is open: you’re free to change it whichever way you like, and share your changes. It is collaborative: a team of people is working on it, u
uncorrelated氏が、相模原の事件を受けたツイートで哲学者ピーター・シンガーの論を引いていた。氏は以前からブログエントリでシンガーを取り上げており（ここ、ここ）、昨年末も今回のツイートと概ね同趣旨のことを書かれている。そこで、シンガーとはどういう人なのだろう、とWikipediaを当たってみたところ、1999年の表題のニューヨーカー記事（原題は「The Dangerous Philosopher」*1）に行き当たった。同記事の中でシンガーの矛盾を突いた箇所が興味深く思われたので、以下に引用してみる。 This sort of reasoning can seem both numbingly logical and excessively coarse. Take, for example, his view of charity. Singer has written that
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