Category

On Wikipedia, categories are used to organize the entire project. To learn about how this works, see Help:Category, Special:Categories, and Wikipedia:FAQ/Categorization.
For an overview of categorization guidelines, see Wikipedia:Categorization. To browse the existing categories, see Portal:Contents/Categorical index.

Category, plural categories, may refer to:

Philosophy and Cognitive Science

• Category of being
• Categories (Aristotle)
• Category (Kant)
• Categories (Peirce)
• Category (Vaisheshika)
• Stoic Categories
• For categories in cognitive science, see categorization

Mathematics

• Category (mathematics)
• Abelian category
• Category of abelian groups
• Category of sets
• Category (topology) in the context of Baire spaces
• Category theory
• Equivalence of categories
• Lyusternik–Schnirelmann category, sometimes called LS-category or simply category
• Monoidal category
• Preadditive category

Games

• Category (chess tournament)

Computer programming

• Categories, a programming concept in Objective-C

Network cabling

• Networking Cable: CAT (1, 2, 3, 4, 5, 5e, 6, 6a)

Other

• Pregnancy category
• Prison security categories in the United Kingdom
• List of boxing weight classes
• List of software categories
• Saffir–Simpson Hurricane Scale - common categorization of hurricane intensities
• Lexical category
• Categories of New Testament manuscripts

See also

• All pages with titles containing "Category"
• Categorical (disambiguation)
• Categorization
• Category 1 (disambiguation)
• Category 2 (disambiguation)
• Category 3 (disambiguation)
• Category 4 (disambiguation)
• Category 5 (disambiguation)
• Category 6 (disambiguation)
• Category 7: The End of the World
• Category A (disambiguation)
• Category B (disambiguation)
• Category C (disambiguation)