o-basic_pairs.ma datatypes/categories.ma o-algebra.ma
o-concrete_spaces.ma o-basic_pairs.ma o-saturations.ma
o-saturations.ma o-algebra.ma
o-algebra.ma datatypes/bool.ma datatypes/categories.ma logic/cprop_connectives.ma
datatypes/bool.ma 
datatypes/categories.ma 
logic/cprop_connectives.ma