Darcy Lecture 2 – 4 :Free Abelian Groups & Free Vector Spaces

[Lecture 1 (Optional): The Euler Characteristic]

Lecture 3: Modular Arithmetic (easy) https://youtu.be/5YEu-vB2dD8

Lecture 4: Addition and Free Vector Spaces https://youtu.be/9qL003DG7Og

Question on @Quora: What is a free group in abstract algebra? https://www.quora.com/What-is-a-free-group-in-abstract-algebra?share=f79e43bc&srid=oZzP

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