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Covers the proof of the Jordan Curve Theorem and the properties of embedded spheres.
Covers the Zig Zag Lemma and the long exact sequence of relative homology.
Explores the Mayer-Vietoris sequence, exact homomorphisms, embedded spheres, and path-connected spaces.
Covers the concept of simplices in delta complexes and explains the standard n-simplex and the ordering of vertices.
Covers the concept of naturality in algebraic topology and the generation of homology groups through induction.
