Seminar: Algebraic Numbers, Galois Theory and Applications

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Organizer: Valentina Di Proietto
Date: Mondays, 4-6pm, Place: SR210/A3, Arnimallee 3

Official website in course registry

First meeting: Monday, April 13, 4pm, Room SR210, Arnimallee 3
Please send questions and comments to kindler - at -
or come to office 112A, Arnimallee 3

Prerequisites: Linear Algebra and some familiarity with basic notions of algebra like groups, rings, fields, ideals, normal subgroups, etc.


Algebraic numbers are complex numbers which are zeroes of a polynomial with rational coefficients. For example $\sqrt{2}, 2^{1/3}$, $i$ or $e^{\frac{2\pi i}{n}}$. In this seminar we want to study algebraic numbers in the context of modern algebra. The notion of an algebraic extension of fields is central. Galois theory describes all (separable) algebraic extensions of a given field using the language of group theory. We will first discuss the Galois theory for finite algebraic extensions. It depends on the prior knowledge of the participants of the seminar how extensive this first stage will be. We will then study several applications and generalizations.

You can find a comprehensive program here.