Joel David Hamkins jdh.hamkins.org

A potentialist perspective on ultrafinitism, Ohio University

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The spectrum of consistency strengths for membership in a computably enumerable set, Notre Dame Logic Seminar, April 2026

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The Book of Infinity, MIT Press, 2026

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Truth and paradox in the theory of finite and infinite games, Owens Memorial Lecture, Wayne State University, April 2026

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Mathematicians do not agree on the essential structure of the complex numbers, ASL/APA Central Division Meeting, Chicago, February 2016

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Surreal arithmetic is bi-interpretable with set theory, CUNY Logic Workshop, March 2026

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The elementary theory of surreal arithmetic is bi-interpretable with set theory, Notre Dame Logic Seminar, November 2025

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What is your number? Logic puzzles for mathematicians – 2025 DePrima Memorial Lecture, Caltech

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The Sannomiya incident—how Jörg Brendle hit the big stage in Japanese art

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The elementary theory of surreal arithmetic is bi-interpretable with set theory, Kobe, Japan, September 2025

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Did Turing ever halt? HPS Colloquium, Notre Dame, October 2025

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The computable surreal numbers, Fudan University, July 2025

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Pointwise definable end-extensions of models of arithmetic and set theory, Changchun, China, July 2025

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Lecture series on the philosophy of mathematics

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How the continuum hypothesis might have been a fundamental axiom, Lanzhou China, July 2025

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Potentialist conceptions of infinity, Peking University, June 2025

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Lectures on Set Theory, Beijing, June 2025

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Skolem’s paradox and the countable transitive submodel theorem, Leeds Set Theory Seminar, May 2025

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The Church of Logic podcast, April 2025

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A potentialist conception of ultrafinitism, Columbia University, April 2025

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