%0 Journal Article %A Dominique Bourn %A Giuseppe Metere %T A note on the categorical notions of normal subobject and of equivalence class %J Theory and applications of categories %D 2021 %P 65-101 %V 36 %I mathdoc %U http://geodesic.mathdoc.fr/item/TAC_2021_36_a2/ %G en %F TAC_2021_36_a2