 ##  [Reductio Ad Absurdum](/index.php/reductio-ad-absurdum) 

  ##  [Reductio Ad Absurdum](https://humanitites.quantumdictionary.io/reductio-ad-absurdum-0) 

  
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**Humanities &amp; Arts Dictionary**

 
Definition

A form of indirect proof in classical logic that establishes the truth of a proposition P by assuming its negation (¬P), deriving a contradiction or an explicit falsehood from that assumption, and thereby inferring that ¬P is untenable and P must hold within the adopted logical framework.