9.1 Categories

  • Subsection 9.1.1: Foundations
    • Definition 9.1.1.1.1: Categories
    • Notation 9.1.1.1.2: Further Notation for Morphisms in Categories
    • Definition 9.1.1.1.3: Size Conditions on Categories
  • Subsection 9.1.2: Subcategories
  • Subsection 9.1.3: Skeletons of Categories
    • Definition 9.1.3.1.1: Skeletons of Categories
    • Definition 9.1.3.1.2: Skeletal Categories
    • Proposition 9.1.3.1.3: Properties of Skeletons of Categories
  • Subsection 9.1.4: Precomposition and Postcomposition
    • Definition 9.1.4.1.1: Precomposition and Postcomposition Functions
    • Proposition 9.1.4.1.2: Properties of Pre/Postcomposition

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