Stockholm university
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Set theory and metamathematics

The course covers the core of modern set theory, and independence results in set theory and proof theory.

Detailed description: Axioms of Zermelo–Fränkel set theory (ZF). Ordinals, well-orderings, and cardinal arithmetic. Independence of the axiom of choice and the continuum hypothesis: permutation models, forcing, and (optional) Gödel’s constructible universe. Gödel’s second incompleteness theorem. Sequent calculus, cut-elimination and normalisation. Gentzen’s consistency proof for Peano arithmetic. Interpretation and consequences of independence results.