 ##  [Modus Ponens](/index.php/modus-ponens) 

  ##  [Modus Ponens](https://natural.quantumdictionary.io/modus-ponens-0) 

  
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**Natural &amp; Formal Sciences Dictionary**

 
Definition

A fundamental rule of inference: from 'If P then Q' (P → Q) and 'P', infer 'Q'. It is the primary detachment rule used to apply conditionals to obtain consequents.

 
 ##  [Modus Ponens](https://mathlogic.quantumdictionary.io/modus-ponens-1) 

  
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- Natural &amp; Formal Sciences -

**Mathematics &amp; Logic Dictionary**

 
Definition

A fundamental valid rule of inference stating that from premises A → B and A one may deduce B; often described as 'if A then B; A; therefore B.'