A Friendly Introduction to Abstract Algebra / Group theory (lesson 7): THE INTEGERS MOD n (Z/nZ)

Описание к видео A Friendly Introduction to Abstract Algebra / Group theory (lesson 7): THE INTEGERS MOD n (Z/nZ)

Embarassing MISTAKE in the group tables at 28:18 and 30:07, which were copied from    • Group theory - SOLUTIONS to problem s...  . Please see the comments there for a correction.

problem set 7:
https://matherialien.jimdofree.com/

00:00 Introduction
01:14 Overview
02:50 „modulo n“ as equivalence relation on Z
04:45 Proposition 7
07:43 Z mod nZ with example n = 5
16:27 Proposition 8: Z / nZ as a group
22:53 Direct Products of Z_n

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