Relation pm#intransitive_relation (?,?)  this category only serves structuration purposes: it is instance of pm#intransitive_relation_type which is not instance of pm#class_of_inheritable_relation_type
  subtype:  pm#inverse  sumo#immediate_instance  sumo#immediate_subclass  sumo#member  sumo#penetrates  sumo#element  sumo#meets_temporally  sumo#parent
  type:  pm#intransitive_relation_type  a binary_relation ?REL is intransitive only if (?REL ?INST1 ?INST2) and (?REL ?INST2 ?INST3) imply not (?REL ?INST1 ?INST3), for all ?INST1, ?INST2, and ?INST3
  supertype:  pm#binary_relation_with_particular_mathematical_property (?,?)
     supertype:  pm#relation_with_particular_mathematical_property (*)
        supertype:  pm#relation_with_particular_property (*)  this rather fuzzy type permits to group categorization schemes less common than those covered by the previous sibling categories
           supertype:  pm#relation__related_thing__relatedthing___related_with (*)  type for any relation (unary, binary, ..., *-ary) and instance of pm#relation_type


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