Seminar series
Date
Mon, 25 Jan 2021
Time
16:00 -
17:00
Location
Virtual
Speaker
Håvard Damm-Johnsen
Local-to-global principles are a key tool in arithmetic geometry. Through a theorem of Siegel on representations of totally positive numbers as sums of squares in number fields we give a concrete introduction to the Hasse principle, and briefly talk about other local-to-global principles. No prerequisites from algebraic number theory are assumed, although some familiarity is helpful for context.