##  [Natural Density](/natural-density) 

  ##  [Natural Density](https://puremath.quantumdictionary.io/natural-density-0) 

  

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- Mathematics & Logic -

**Pure Mathematics Dictionary**

 







 

 

 

 



 

 

 

 

Definition

Asymptotic measure of size of a subset A of the natural numbers given by the limit d(A)=lim_{x→∞} |A∩[1,x]|/x when that limit exists; ranges in [0,1] and quantifies proportion of integers in A.