2019–20–A

Prof. Ido Efrat

Course topics

  1. Ordered fields: Hilbert’s 17 problem, orderings and preorderings, sums of squares, real closed fields, Artin-Schreier theory
  2. Infinite Galois theory: profinite groups, the Galois correspondence in the infinite case
  3. Introduction to Galois cohomology

University course catalogue: 201.1.4321