Definition:Property of Morphisms Stable Under Composition
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It has been suggested that this page be renamed. In particular: the term "closed" is used consistently in $\mathsf{Pr} \infty \mathsf{fWiki}$, as it is an obviously better term than "stable". To discuss this page in more detail, feel free to use the talk page. |
Definition
Let $\mathbf C$ be a category.
Let $P$ be a property of morphisms of $\mathbf C$.
Then $P$ is stable under composition if and only if:
- for any three objects $X$, $Y$ and $Z$
- any two morphisms $f, g \in P$ such that $f: X \to Y$ and $g: Y \to Z$
we have:
- $g \circ f \mathop \in P$
Sources
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