Tag Archives: Lambert of Auxerre

Infinitary Logic in the Middle Ages?

Posted on July 18, 2019 by

Earlier this week I attended Computability in Europe, where I enjoyed catching up with many logic and computability friends, and answering random “did they do X in the Middle Ages?” questions. One in particular warranted a blog post; Benjamin Rin … Continue reading →

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On the selling of pepper: Sherwood, Auxerre, Bacon, and Spain

Posted on February 7, 2019 by

After our brief political digression last week, this week we’re back to the pepper puzzle. Since writing that post, I’ve been continuing to collect data on how medieval authors analysed these two sentences: (1) Pepper is sold here and in … Continue reading →

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A medieval puzzle of generic subjects and conjunctive predicates

Posted on January 24, 2019 by

Last weekend I had the pleasure of giving a keynote talk at the Twelfth Annual Cambridge Graduate Conference on the Philosophy of Mathematics and Logic. I was asked to give an overview/introduction to medieval logic (here are my slides), working … Continue reading →

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Syllogism Mnemonics

Posted on November 16, 2017 by

The other day a colleague of mine asked if I had anything I could send him regarding the medieval syllogism mnemonics. I told him there was some info in the textbook I’m writing, but it’s rather idiosyncratic to the way … Continue reading →

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The Logicians Who Say ‘Ne’

Posted on August 10, 2017 by

I’m currently in Stockholm for the 3rd Nordic Logic Summer School where I’ve been giving a introduction to logic in the Middle Ages. I brought along the Big Four (the textbooks of Bacon, Sherwood, Lambert, and Peter), as well as … Continue reading →

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What’s in a name?

Posted on May 19, 2016 by

Yesterday I was writing up comments on an essay on Heloise and Abelard, and found myself, somewhat to my surprise, stubbornly referring to her exclusively as “d’Argenteuil”. After all, we call him “Abelard”, not “Peter”, so why shouldn’t we afford … Continue reading →

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Medieval logicians on ‘and’, Part 2

Posted on April 28, 2016 by

In this post I continue my tour through what medieval logicians have to say about ‘and’ or conjunction (here is Part 1). Roger Bacon in the Art and Science of Logic [1] introduces a distinction between when ‘and’ is used … Continue reading →

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