Every object is a cokernel of the form \begin{align*} \operatorname{coker}\left( \bigoplus_{i=1}^n \one \to \bigoplus_{j=1}^m \one \right) \end{align*}
Every object is a cokernel of the form \begin{align*} \operatorname{coker}\left( \bigoplus_{i=1}^n \one \to \bigoplus_{j=1}^m \one \right) \end{align*}