##  [Subbasis](/subbasis) 

  ##  [Subbasis](https://puremath.quantumdictionary.io/subbasis-0) 

  

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- Mathematics & Logic -

**Pure Mathematics Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A collection S of subsets of a set X whose finite intersections form a basis for a topology on X; the topology generated by S is the collection of arbitrary unions of finite intersections of elements of S.