The defect functor of a homomorphism and direct unions

Simion Breaz, Jan Žemlička

We will study commuting properties of the defect functor ${\mathrm{Dev}}_{\beta }=\mathrm{Coker}{\mathrm{Hom}}_{\mathcal{C}}(\beta ,-)$ associate to a homomorphism $\beta$ in a finitely presented catego…