Tag Archives: Roger Bacon

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

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

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

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’

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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Integrating medieval logicians into Introduction to Logic

Term starts next week, and I am so pleased to be teaching again what is probably my favorite course ever, Introduction to Logic. Most of it is going to be a pretty standard Intro Logic course: syntax and semantics of … Continue reading

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Ex impossibili sequitur quidlibet in the 13th C (part 1)

Two weeks ago, I wrote about Ex impossibili sequitur quidlibet in the 12th C. Today, I come back to one of the promises there, namely, to look at part of Joke Spruyt’s “Thirteenth-Century Positions on the Rule ‘Ex Impossibili Sequitur … Continue reading

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Why should we care about history of logic? (expanded)

The goal of this post is to expand on the slides, linked in the previous post, for the talk I gave at the Australasian Association of Logic two weeks ago, on “Why should we care about history of logic?” This … Continue reading

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