Fix an object $B$ in some category.
- What does the existence of a diagram $A \rightarrowtail B \twoheadrightarrow A$ imply about $A$ and $B$?
- What if $A \rightarrowtail B \twoheadrightarrow A$ is an exact sequence?
Fix an object $B$ in some category.
Copyright © 2021 JogjaFile Inc.