 ##  [Brown Representability Theorem](/brown-representability-theorem) 

  ##  [Brown Representability Theorem](https://puremath.quantumdictionary.io/brown-representability-theorem-0) 

  

 [![Pure Mathematics Dictionary](/sites/default/files/styles/large/public/2026-01/Pure%20Mathematics.png.webp?itok=5pZnFQ59)](/topic-specific-dictionaries/mathematics-logic/pure-mathematics)

- Mathematics &amp; Logic -

**Pure Mathematics Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A theorem giving necessary and sufficient conditions for a contravariant homotopy functor on suitable homotopy categories (classically pointed CW complexes) to be representable by a space or spectrum, i.e., naturally isomorphic to homotopy classes of maps into a classifying object.