Free Group and Representation

Abstract Algebra:自由群 &表示 Free Group & Representation

何谓 “Free “ ?

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Notes:

1. Answer to What is a free group in abstract algebra? by Cassidy Block https://www.quora.com/What-is-a-free-group-in-abstract-algebra/answer/Cassidy-Block?ch=3&share=83fc0bde&srid=oZzP

2. Free Group (Wikipedia) : https://en.m.wikipedia.org/wiki/Free_group

3. Free Vector Space