Lecture
Mayer-Vietoris Sequence
In course
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Description
This lecture covers the Mayer-Vietoris sequence, which deals with the exact sequence of homomorphisms between abelian groups. It explains the concept of complementary embedded spheres and the commutativity of rows in the homomorphism diagram. The lecture also discusses the isomorphisms between groups and the implications of the Barratt-Whitehead Lemma. Furthermore, it explores the application of the Mayer-Vietoris sequence in reduced homology and the van Kampen theorem. Through various examples, the instructor demonstrates how path-connected open subsets lead to path-connected spaces. The lecture concludes by emphasizing the importance of understanding the exact sequences and the abelianization process.
Instructor
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