What is... a p-adic number?

This page hosts information on Claudius Heyer's talk "What is … a p-adic number?" at the "What is …?" seminar. This talk will help you better understand the talk by Philippe Michel.

Where & When

• Friday, January 15, 1pm at BMS Loft, Urania

Abstract

• p-adic numbers are an integral part of algebraic number theory. In this

talk we will define the field Q_p of p-adic numbers and observe some differences and similarities between Q_p and the field of real numbers. Furthermore, we will state Hensel’s Lemma and deduce some immediate, yet interesting, properties of Q_p.