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This lecture introduces the construction of alpha and beta in the context of group theory, focusing on the steps to build these elements and their associated transformations. It covers the process of defining and verifying properties related to alpha and beta, emphasizing the importance of commutativity. The instructor explores the implications of these constructions and their relevance in natural transformations, providing a detailed analysis of the diagrams involved. Through a series of examples and derivations, the lecture illustrates the application of alpha and beta in various mathematical contexts.