 ##  [Disjunction Property](/disjunction-property) 

  ##  [Disjunction Property](https://mathlogic.quantumdictionary.io/disjunction-property-0) 

  
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- Natural &amp; Formal Sciences -

**Mathematics &amp; Logic Dictionary**

 
Definition

A metatheoretical property of a deductive system stating that whenever the system proves a disjunction A ∨ B (typically a closed formula) it proves A or it proves B individually; commonly required of constructive systems.