 ##  [Cantor's Diagonal Argument](/cantors-diagonal-argument) 

  ##  [Cantor's Diagonal Argument](https://mathlogic.quantumdictionary.io/cantors-diagonal-argument-0) 

  
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- Natural &amp; Formal Sciences -

**Mathematics &amp; Logic Dictionary**

 
Definition

A constructive proof method that, given any purported list (enumeration) of objects of a certain type, builds a new object by altering the nth feature of the nth listed object so that the constructed object cannot appear on the list.