# Recent writing

- Frege’s philosophy of mathematics—Interview with Nathan Ormond, December 2021Joel David Hamkins
- (with P. Lücke) Sigma_1-definability at higher cardinals: Thin sets, almost disjoint families and long well-ordersSandra Müller
- Complicated colorings, revisitedAssaf Rinot
- Davide Leonessi, MSc MFoCS, Oxford, September 2021Joel David Hamkins
- Thursday September 30 – National Day for Truth and ReconciliationMike Pawliuk – Mathematics
- Refugees are welcome!Nick Gill
- Fregean abstraction in Zermelo-Fraenkel ZF set theory, Oxford, November 2021Joel David Hamkins
- My favorite theoremJoel David Hamkins
- Jumps in the Borel complexity hierarchySamuel Coskey
- Lectures on the Philosophy of Mathematics, Michaelmas term 2021, OxfordJoel David Hamkins
- Book review, Catarina Dutilh Novaes, The dialogical roots of deductionJoel David Hamkins
- Counting to Infinity and BeyondJoel David Hamkins
- Sigma-Prikry forcing III: Down to Aleph_omegaAssaf Rinot
- Borel complexity theory - Classification and structureSamuel Coskey
- Infinite sets and Foundations—Interviewed on the Daniel Rubin ShowJoel David Hamkins
- (with P. Schlicht) Uniformization and Internal AbsolutenessSandra Müller
- An algebra of ordersJoel David Hamkins
- Set Theory Conference in Jerusalem - TBASandra Müller
- Linear gradings of partial ordersJoel David Hamkins
- The lattice of sets of natural numbers is richJoel David Hamkins
- The Tennenbaum phenomenon for computable quotient presentations of models of arithmetic and set theory, Shanghai, August 2021Joel David Hamkins
- Math 275, Fall 2021Samuel Coskey
- Math 301, Fall 2021Samuel Coskey
- Review of Ungrading (Blum 2020) for use in UTM math coursesMike Pawliuk – Mathematics
- (with C. J. Eagle, C. Hamel, and F. D. Tall) An undecidable extension of Morley’s theorem on the number of countable modelsSandra Müller

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