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"Topos" can refer to several things depending on the context: 1. **Mathematics (Category Theory)**: In mathematics, particularly in category theory, a topos (plural: topoi or toposes) is a category that behaves like the category of sets and has certain additional properties. Topoi provide a framework for doing geometry and topology in a categorical way, and they can be used to study logical systems.

Ancestors (6)

  1. Sheaf theory
  2. Category theory
  3. Fields of abstract algebra
  4. Fields of mathematics
  5. Mathematics
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