(source: presheaf.com)
Here our category is that of groups where first arrow between A and B is a monomorphism. Does that imply that the lower bottom arrow is a monomorphism ? That is the arrow between B and C. Here the diagram is a pushout diagram.
2026-05-14 08:42:54.1778748174
Monomorphism in one of the component of pushout diagram implies other component is monomorphism
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