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反身關係 (ReflexiveRelation)

Relation rel is reflexive if (rel inst inst) for all inst.

Ontology

SUMO / BASE-ONTOLOGY

Superclass(es)

[tree]
實體
is subclass of
  抽象的  
is subclass of
  關係  
is subclass of
  二元關係  
is subclass of
  反身關係  

Instance(s)

部分位於  次圖  時段重疊  相連的  空間重疊 

Subclass(es)

偏序關係  等同關係 

Coordinate term(s)

反對稱關係  二元述詞  非可遞關係  非反身關係  對稱關係  可遞關係  三角關係  一元函數 

Axioms (1)

(=>
      (instance ?REL ReflexiveRelation)
      (=>
            (or
                  (holds ?REL ?INST1 ?INST2)
                  (holds ?REL ?INST2 ?INST1))
            (holds ?REL ?INST1 ?INST1)))