Juliette Kennedy

Fall 2022: Visitor, School of Historical Studies, Institute for Advanced Study (Princeton).

External member of SPHERE, Université Paris Cité, as of December 2023.

Research Interests

• Set Theory and Set-Theoretic Model Theory.
• Foundations and Philosophy of Mathematics.
• Philosophy and History of Logic.
• Art History and Curatorial Practice.
• Philosophy of Language.

Editorial board member

• Review of Symbolic Logic (2018-2024)
• Philosophia Mathematica
• Theoria
• Journal for the Philosophy of Mathematics (JPM)

Teaching

• Reading course on the Hilbert Program (Fall 2022)
• Large cardinals (Fall 2017).
• Elements of set theory (Spring 2017).
• On logical consequence (Spring 2017).
• Seminar on Coffa's The semantic tradition from Kant to Carnap (Spring 2016).
• Arithmetic: Lecture notes.

Invited talks 2025

• "Completeness for strong logics," February 5, 2025, Models and Sets seminar, Leeds, UK
• "Set theory as a theory of the infinite," at conference "The Concept of Actual Infinity," April 7-8, Paris
• Tutorial, Young Set Theory Workshop, September 8-12, 2025, TU WIEN (Vienna, Austria)

Invited talks 2023-2024

• "Gödel, Turing and the Iconic/Performative Axis", Les mathématiques discrétes et la logique: des mathématiques à l'informatique, 19 January, 2023, CIRM.
• "The Formal/Informal Boundary", at the conference "The Formal Turn - The Emergence of Formalist Thinking in Twentieth-Century Thought," University of Vienna, February 13-17, 2023.
• "Computability", March 15, 2023, Kyiv Logic seminar, Kyiv, Ukraine
• "The syntax/semantics distinction", March 21, 2023, The Finnish network of the philosophy of mathematics seminar, Helsinki
• Author Meets Critics session on Gödel, Tarski and the lure of natural language: logical entanglements, formalism-freness, Pacific APA, April 2023. Organized by the Philosophy of Mathematics Association. Critics: Neil Barton, Gabe Goldberg, Maryanthe Malliaris, Toby Meadows, Zeynep Soysal.
• "The supervenience of syntax on semantics in the foundational context", June 9, 2023, PhilMath Intersem, Paris.
• "Extracting syntax from semantics", British Logic Colloquium, Bristol, September 7-8, 2023.
• "How first order is first order logic?" French PhilMath Workshop, October 18-20, 2023, Paris
• "On the mathematical sublime," K-group, University of Turku, October 27, 2023.
• "Historicizing Extended Constructibility," with J. Väänänen, Séminaire de philosophie et mathématiques de la rue d'Ulm, November 6, 2023.
• "Inner models of set theory," Helsinki Mathematics Colloquium, May 29, 2024.
• "Incompleteness," Bard College, May 3, 2024.
• TBA, 7th International meeting of the Association for the Philosophy of Mathematical Practice, Pavia, June 18, 2024.
• TBA, World Congress of Philosophy, August 2024.

Invited talks 2022

• "A view of the Incompleteness Theorems," University of Bogota, January 11, 2022.
• Panel entitled "Gödel, \ Church and Turing in Retrospect", Eastern APA, January 14, 2022, Baltimore.
• "The Incompleteness theorems," meeting on The Philosophy of Metamathematical\ Results, Munich Center for Mathematical Philosophy, January 21, 2022.
• Nordic Logic Seminar, March 28, 2022, University of Stockholm.
• Chicago Spring Logic Conference, April 13-16, 2022.
• "Hartryfest", Conference in honor of Hartry Field, Columbia University, May \ 13-14, 2022.
• "On the Entscheidungsproblem", 10th Annual Meeting of the Society for the Study of the History of Analytical Philosophy, Shanxi University 6-8 July 2022.
• Plenary talk, Logic Colloquium 2022 (European Summer Meeting of the ASL), Reykjavik, June 27 - July 1, 2022.
• "Does Syntax supervene on semantics in the foundational context?", at Wittgenstein on Foundations: Mathematics, Mind, World, Wadham College, Univ. of Oxford and Dept. of Philosophy, Univ. of Bergen. August 1, 2022.
• "Kripke on the Entscheidungsproblem", 28th Nordic Congress of Mathematicians, August 19, 2022.
• "On the Problem of Cultural Influence," seminar Grandes Conférences of Poincaré Archives, Nancy, October 12, 2022.
• "Historicising Extended Constructibility," European Set theory Society Colloquium, October 27, 2022.

Selected other recent talks

• "90 Years of Incompleteness!" UNAM, Mexico City, Oct 15, 2021.
• Keynote, History and Philosophy of Computing (HaPoC-6), Turing Centre, ETH, October 27-29, 2021.
• "From Incompleteness to Extended Constructibility," Online International Workshop on Gödel's Incompleteness Theorems, August 2021, Wuhan.
• "Kreisel on Informal Rigor", PMA session at the Pacific APA, April 2021
• "Entanglements, Instabilities and Invariance: the peculiarities of the formal/informal border". Conference "Perspectives on Mathematical Practices", January 28-30, 2021
• Keynote, 31st Novembertagung On the History and Philosophy of Mathematics.\ Humboldt-Universität zu Berlin, November 2020.
• "On the feasibility of conceptual engineering in logic and (meta)mathematics: a few test cases", Arche Conceptual Enigineering Seminar, St. Andrews, 10 November, 2020.
• Author meets critics session on John Baldwin's Model Theory and the Philosophy of Mathematical Practice, 2020 Eastern APA, Jan 8, 2020, Philadelphia.
• "On the entanglement of second order logic with set theory and conversely." Workshop in set theory and philosophy of mathematics, Universite Paris Diderot, February 7-8 2020.
• Plenary speaker, 2020 Annual Meeting of the ASL, March 25-28, 2020, UC Irvine. (Cancelled due to Covid.)
• Conference on The 'End' of Philosophy of Mathematics?, at Princeton University, 3-5 April 2020. (Cancelled due to Covid.)
• Author meets critics session, CLMPS Prague, August 10, 2019.
• Invited talk at conference The Joint Quest for Absolute Infinity and the Continuum - From Cantor to Woodin, Turku University, May 6-10, 2019.
• Speaker, Invited Symposium: History and Philosophy of Logic, 2019 Eastern Division Meeting of the APA, New York
• Lecture, Summer School, 100 Years of Model Theory, University of Jena, September 3-7, 2018
• Plenary, 11th Annual Cambridge Graduate Conference on the Philosophy of Mathematics and Logic, January 20-21, 2018.
• Lectures on the philosophy of mathematics, Summer School on Mathematical Philosophy for Female Students, Munich Center for Mathematical Philosophy, 23-29 July, 2017
• "Gödel's Reception of Turing's Model of Computability: the 'Shift of Perception' in 1934", CiE 2017, History and Philosophy of Computing Special Session, Turku, June, 2017.
• "Tarski and 'the mathematical'", Model Theory: Philosophy, Mathematics and Language, Munich, January, 2017.
• "On Gödel's reception of Gödel's Incompleteness Theorems." Images of Mathematics lecture series, ETH, Zurich, 5-6 December, 2016
• Images of Mathematics lecture series, ETH, Zurich, 5-6 December, 2016
• "Squeezing Arguments and Strong Logics", Working Group in the History and Philosophy of Logic, Mathematics, and Science (HPLMS) UC Berkeley, November 16th, 2016
• Set Theoretic Pluralism symposium, Aberdeen July 12-18, 2016
• "Tarski and the 'mathematical'", Society for the Study of Analytic Philosophy, Denver, June 16-18, 2016
• Philosophy of Mathematics Seminar, University of Oxford, November 30, 2015.
• Entanglement and Formalism Freeness: Templates from Logic and Set Theory, Congress of Logic, Methodology and Philosophy of Science, Helsinki, August, 2015.
• Keynote, Fourth Annual Conference of the Society for the Study of the History of Analytical Philosophy, Trinity College Dublin, 4-6 June 2015.

Selected publications (in chronological order)

• On regular reduced products, with Saharon Shelah, Journal of Symbolic Logic, Volume 67, Number 3, Sept. 2002. (dvi, ps, pdf).
• History of Logic (vols. 1, 2), editors Juliette Kennedy and Gabriel Sandu, Synthese, volume 137 (1-2), 2003.
• On embedding models of arithmetic into reduced powers, 8th Workshop on Logic, Language, Informations and Computation---WoLLIC'2001 (Brasilia). Mat. Contemp. 24 (2003), 91--115.
• On embedding models of arithmetic of cardinality aleph_1 into reduced powers, with Saharon Shelah, Fundamenta Mathematicae, Volume 176, Issue 1, 2003. (dvi, ps, pdf).
• On the Philosophical Development of Kurt Gödel, with Mark van Atten, Bulletin of Symbolic Logic, Volume 9, Issue 4, December 2003. pages 425-476. (pdf)
• More on regular reduced products, with Saharon Shelah, Journal of Symbolic Logic, Volume 69, Issue 4, December 2004. (dvi, ps, pdf).
• Gödel's Modernism: On Set-Theoretic Incompleteness, with Mark van Atten, Graduate Faculty Philosophy Journal, volume 25, number 2, 289--349, 2004 (pdf).
• Incompleteness - A Book Review, Notices of the American Mathematical Society April 2006, (pdf).
• On Applications of Transfer Principles in Model Theory, with Jouko Väänänen, in Set Theory: Recent Trends and Applications (A. Andretta ed.), Quaderni di Matematica, vol 17, 2007, 111-136.
• Kurt Gödel, An entry in the Stanford Encyclopedia of Philosophy, 2007.
• Review of “Kurt Gödel: Das Album”, by Sigmund, Dawson and Mühlberger, The Mathematical Intelligencer vol. 29, issue 3, pp. 73-75, 2007.
• Regular Ultrafilters and Finite Square Principles, with Saharon Shelah, and Jouko Väänänen, (pdf), Journal of Symbolic Logic 73(2), 2008, 817-823.
• On Gödel's Logic, with Mark van Atten, The Handbook of the History of Logic, volume 5, Elsevier, 2009, 449-509.
• Gödel's Modernism: On Set Theoretic Incompleteness, Revisited, with Mark van Atten, in Logicism, Intuitionism and Formalism: What has become of them?, edited by Sten Lindström, E. Palmgren, K. Segerberg, and V. Stoltenberg-Hansen, Springer, 2009, 303-356.
• Review of the Princeton Companion to Mathematics, T. Gowers, ed., Bulletin of Symbolic Logic, vol 15(4), December 2009, 431-436.
• Review of The Autonomy of Mathematical Knowledge by Curtis Franks, Bulletin of Symbolic Logic, vol. 17(1), 119-122, March, 2011.
• Set Theory, Arithmetic, and Foundations of Mathematics Edited by: Juliette Kennedy, University of Helsinki, and Roman Kossak, City University of New York, Cambridge University Press, Lecture Notes in Logic 36, 2011.
• Can the Continuum Hypothesis be Solved?, The Institute Letter, Institute for Advanced Study, Fall 2011.
• Gödel's Thesis: An Appreciation, in Horizons of Truth, Proceedings of the Gödel Centenary, Cambridge University Press, 2011.
• Hilbert's Twenty-fourth Problem: On the Aesthetic of Simplicity in Mathematics. Arkadia Gazette, Helsinki, January 2012.
• Set Theory, Classical and Constructive, Annals of Pure and Applied Logic, volume 163, issue 10, pages 1359-1446 (October 2012). Guest editor with Jaap van Oosten. Invited papers from the meeting of the same name in Amsterdam, May 6-7, 2010.
• On Formalism Freeness: Implementing Gödel's 1946 Princeton Bicentennial Lecture, Bulletin of Symbolic Logic, volume 19, issue 3, September 2013, 351-393. MathSciNet review.
• Review of After Gödel by Richard Tieszen, Notre Dame Philosophical Reviews, Oct 2013.
• Review of Defending the Axioms: On the Philosophical Foundations of Set Theory by Penelope Maddy, Bulletin of Symbolic Logic, March 2014.
• Interpreting Gödel: Critical Essays, edited volume, Cambridge University Press, 2014.
• Gödel's 1946 Princeton Bicentennial Lecture: An Appreciation, in Interpreting Gödel: Critical Essays, Cambridge University Press, 2014.
• On the "Logic without Borders" Point of View, Logic without Borders: Essays on Set Theory, Model Theory, Philosophical Logic and Philosophy of Mathematics, edited by Åsa Hirvonen, Juha Kontinen, Roman Kossak and Andrés Villaveces, de Gruyter, 2015, 1-14.
• Aesthetics and the Dream of Objectivity: Notes from Set Theory, with J. Väänänen, for the proceedings of the 2011 conference Mathematical Evidence, University of Oslo. Inquiry, 58(1), 2015, 83-98.
• Regular Ultraproducts at Regular Cardinals, with S. Shelah, and J. Väänänen, Notre Dame Journal of Formal Logic, 56:3, 2015.
• Inner Models from Extended Logics, with M. Magidor and J. Väänänen. Isaac Newton Institute preprint series, January 2016.
• Turing, Gödel and the "Bright Abyss", in: Philosophical Explorations of the Legacy of Alan Turing (edited by J. Floyd and A. Bokulich), Proceedings of the conference Turing 100 at Boston University, November 2012, Springer, 2017.
• Three Moments in the Life of the Mathematical Diagram: Notes on the Syntax/Semantics Distinction, for the volume Mathematical Concepts edited by L. de Freitas, N. Sinclair and A. Coles. Cambridge University Press, 2017.
• Squeezing Arguments and Strong Logics, with J. Väänänen, Proceedings of LMPS 2016, Hannes Leitgeb, Ilkka Niiniluoto, Elliott Sober, and Päivi Seppälä, editors, 2017.
• Gödel's Reception of Turing's Model of Computability: the 'Shift of Perception' in 1934, Proceedings of CiE 2017, Unveiling Dynamics and Complexity, 13th Conference on Computability in Europe, CiE 2017, Turku, Finland, June 12-16, 2017. Jarkko Kari, Florin Manea, Ion Petre (eds.) Lecture Notes in Computer Science, vol. 10307 (2017).
• The System that Destroys Itself, or Greenberg's Modernism & the Liar's Paradox, with Michael Maizels, Crisis and Critique, Vol 5(1), 2018.
• Kurt Gödel and the mechanization of mathematics, Times Literary Supplement, April 20, 2018.
• Remarks on Heller-Roazen's No One’s Ways: An Essay on Infinite Naming, Syndicate, 2019.
• Gödel, Tarski and the lure of natural language: logical entanglements, formalism-freeness, Cambridge University Press, 2020.
• Gödel and the Integrated Self, or: On the Philosopher's Second Sailing. Theoria, 2020.
• Mapping Traces, co-editor (with Andrés Villaveces and Maria Clara Cortés), Special issue of Theoria, vol. 87, issue 4, August 2021.
• Inner Models from Extended Logics: Part 1, with M. Magidor and J. Väänänen. Journal of Mathematical Logic Vol. 21, No. 2 (2021). Available in arXiv.
• Inner Models from Extended Logics: Part 2, with M. Magidor and J. Väänänen. Available in arXiv. To appear.
• Logicality and model classes, with J. Väänänen. Bulletin of Symbolic Logic 27(4), 385-414, 2021. Available in arXiv.
• Gödel's Incompleteness Theorems, Cambridge Elements series, 2022.
• "Review of Floyd and Mühlhölzer on Wittgenstein's Annotations to Hardy," Philosophia Mathematica, June 2022.
• "Second Philosophy and the Depth Metaphor", in volume The Philosophy of Penelope Maddy, Sophia Arbeiter, Juliette Kennedy, editors, Springer series Outstanding Contributions to Logic, to appear.
• "On: One True Logic", Reasoner, special issue on infinite reasoning, Volume 16, Number 7, October 2022.
• "Gödel, Turing and the Iconic/Performative Axis," special issue 'Turing the Philosopher: Established Debates and New Developments,' D. Proudfoot, editor, Philosophies 2022, 7(6), 141; https://doi.org/10.3390/philosophies7060141.
• "A conversation with Hugh Woodin," with Beau Mount, in The Philosophy of Penelope Maddy, Outstanding Contributions to Logic, edited by Sophia Arbeiter and Juliette Kennedy, Springer.
• The Philosophy of Penelope Maddy, co-editor (with Sophia Arbeiter) of essay collection, Springer series Outstanding Contributions to Logic, 2024.
• "Boris Zilber and the model-theoretic sublime", Model Theory, vol. 3 (2), 2024.
• A semantic decomposition of the Liar Paradox, or: when is a paradox not a paradox? With J. Väänänen. For the volume The Liar Paradox, Classic Philosophical Arguments series of Cambridge University Press, Lorenzo Rossi, editor, to appear.
• "How first order is first order logic?" with J. Väänänen, for The Oxford Handbook of Philosophy of Logic, editors: Elke Brendel, Massimiliano Carrara, Filippo Ferrari, Ole Hjortland, Gil Sagi, Gila Sher, Florian Steinberger, Oxford University Press, to appear.