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This chapter begins with a discussion of category theory, which can be defined as the mathematical study of (abstract) algebras of functions. The functions of sets, definitions of a category, examples of categories, isomorphisms, constructions on categories, free categories, and foundation are discussed. Exercises are provided in the last part of the chapter.
Keywords: functions; categories; isomorphisms; foundations
Chapter. 8344 words. Illustrated.
Subjects: algebra
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