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Structures · Category theory

CategoryTheory.Functor.IsCocontinuous

A functor G : (C, J) ⥤ (D, K) between sites is called cocontinuous (SGA 4 III 2.1) if for all covering sieves R in D, R.pullback G is a covering sieve in C.

Defined in
Mathlib.CategoryTheory.Sites.CoverLifting
Shape
3 explicit arguments · adds cover_lift

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Concrete types that are instances2

  • CategoryTheory.Over
  • AlgebraicGeometry.Scheme.Opens

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