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Mathlib.CategoryTheory.Types.Monomorphisms

Stability properties of monomorphisms in Type #

In this file, we show that in the category Type u, monomorphisms are stable under cobase change, filtered colimits. After importing Mathlib/CategoryTheory/MorphismProperty/TransfiniteComposition.lean, the fact that monomorphisms are stable under transfinite composition will also be inferred automatically.

(The stability by retracts holds in any category: it is shown in the file Mathlib/CategoryTheory/MorphismProperty/Retract.lean.)