Permutation Groups and Symmetric Groups | Abstract Algebra

Опубликовано: 28 Ноябрь 2022
на канале: Wrath of Math
51,020
880

We introduce permutation groups and symmetric groups. We cover some permutation notation, composition of permutations, composition of functions in general, and prove that the permutations of a set make a group (with certain details omitted). #abstractalgebra #grouptheory

We will see the Cayley table for the symmetric group S3, and look at some inverse permutations. We also cover the definition of a permutation, which is a bijection from a set to itself.

Cayley's Theorem:    • Proof of Cayley's Theorem | Abstract ...  

A proof that compositions of bijections are bijective in two parts:
   • Proof: Composition of Injective Funct...  
   • Proof: Composition of Surjective Func...  

Abstract Algebra Course:    • Abstract Algebra  
Abstract Algebra Exercises:    • Abstract Algebra Exercises  

Get the textbook for this course! https://amzn.to/3IjoZaO

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