This will be a talk at the UW Madison Logic Seminar on 22 October 2024. Abstract. The principle of covering reflection holds of a cardinal κ if for every structure B in a countable first-order lang…

Joel David Hamkins

02.12.2024

The computable surreal numbers, Notre Dame Logic Seminar, December 2024 | Joel David Hamkins

This will be a talk for the Notre Dame Logic Seminar, 3 December 2024, 2:00pm, 125 Hayes-Healey. Abstract. I shall give an account of the theory of computable surreal numbers, proving that these fo…

Joel David Hamkins

14.12.2024

Every worldly cardinal admits a Gödel-Bernays structure | Joel David Hamkins

My Oxford student Emma Palmer and I have been thinking about worldly cardinals and Gödel-Bernays GBC set theory, and we recently came to a new realization. Namely, every worldly cardinal $\kappa$ a…

Joel David Hamkins

11.01.2025

The Human Podcast: 10 questions in 10 minutes | Joel David Hamkins

I had an enjoyable little discussion with Joe Murray of The Human Podcast, part of his new series, called 10 questions in 10 minutes, in which he asks his interview subjects for short answers to te…

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Joel David Hamkins

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The covering reflection theorem, Madison Logic Seminar, October 2024 | Joel David Hamkins

The computable surreal numbers, Notre Dame Logic Seminar, December 2024 | Joel David Hamkins

Every worldly cardinal admits a Gödel-Bernays structure | Joel David Hamkins

The Human Podcast: 10 questions in 10 minutes | Joel David Hamkins

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Joel David Hamkins