Definition:Zero Morphism via Zero Object
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Definition
Let $C$ be a category which has a zero object $0$.
Let $a, b \in C$ be objects.
The zero morphism $0$ from $a$ to $b$ is the composition of the unique morphism $a \to 0$ and the unique morphism $0 \to b$:
- $0: a \to 0 \to b$
Also see
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