1 sets/sets.ma logic/equality.ma
2 sets/setoids1.ma sets/setoids.ma
3 sets/setoids.ma logic/connectives.ma properties/relations.ma
4 logic/equality.ma logic/connectives.ma
5 logic/connectives.ma logic/pts.ma
6 algebra/magmas.ma sets/sets.ma
7 properties/relations.ma logic/pts.ma