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Van Kampen's Theorem (Hatcher 1.2)

Given by Samuel Qunell, a graduate student at UCLA pursuing a PhD in mathematics. This talk was given in preparation for the UCLA geometry/topology qualifying exam, specifically the algebraic topology portion. It aims to define the free product of groups, show Van Kampen's theorem, and give examples of its use. The information for this talk came from Allen Hatcher's "Algebraic Topology" section 1.2. This video is intended to be the first/second in a series of videos outlining the important portions of algebraic topology needed for the qualifying exam. The link to the full playlist can be found at    • Algebraic Topology Exam Preparation