Stefan Buijsman was born in Leiden in 1995 and obtained an M.A. in Philosophy at Leiden University in 2013. Before that he studied Computer Science and Philosophy, also at Leiden University. He wrote a B.A. Thesis in logic and an M.A. Thesis on assertion.

In 2016, he obtained his PhD at Stockholm University in the philosophy of mathematics. As of January 2019, he is the principal investigator of the Vetenskapsrådet project Numbers: the relevance of empirical results for philosophy at Institutet för Framtidsstudier.

Philosophical Interests: Philosophy of Mathematics, Philosophy of Mathematical Practice, Epistemology, Philosophy of Science.



— "Learning the Natural Numbers as a Child", forthcoming in Noûs.

— "Two roads to the successor axiom", forthcoming in Synthese.

— With Bahram Assadian, "Are the natural numbers fundamentally ordinals?", fortchoming in Philosophy and Phenomenological Research

— "How numerals support new cognitive capacities", forthcoming in Synthese


— "The role of mathematics in Science. Review of H. Field's Science Without Numbers (2nd ed.)", Metascience 26 (3): 507-509.

— "Accessibility of reformulated mathematical content", Synthese 194 (6): 2233-2250.

— "Referring to mathematical objects via definite descriptions", Philosophia Mathematica 25 (1): 128-138.


 "Philosophy of Mathematics for the Masses: Extending the scope of the philosophy of mathematics", PhD Thesis, Stockholm University.

Popular Science

— 2018, "Plussen en Minnen", De Bezige Bij, the Netherlands: a popular science book for adults about the question 'why should you know something about math when you never calculate anything in your daily life?'. To be translated into (at least): English, German, Hungarian, Swedish and Polish. 

— 2018, "Het Rekenrijk", Luitingh-Sijthof, the Netherlands: a children's book about mathematics