ILC 1 expanded class ae9

      ae9    properties of relations 

ae9  [:]	properties of relations
ae9b	reflexive relations
ae9d	symmetric relations
ae9f	transitive relations
ae9n	connected relations
ae9q	equivalent relations
ae9t	relations by number of arguments
ae9tb	one-one relations
ae9td	one-many relations
ae9tm	many-one relations
ae9tn	many-many relations

or

Facets key
0  under aspect      
1  at time           
2  in place          
3  through process   
4  made of element   
5  with organ        
6  from origin       
7  to destination    
8  like pattern      
9  of kind