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Learn about polynomial functors in this advanced mathematics lecture, part 5 of a 9-part series delivered by David Spivak at the Topos Institute's Poly at Work workshop in February 2024. Explore the composition product (◁) and its key properties, followed by an in-depth examination of various facts about ◁. Conclude with a comprehensive discussion of duoidality, gaining insights into these fundamental concepts in category theory and their practical applications.
