##  [Correspondence](/correspondence) 

  ##  [Correspondence](https://mathlogic.quantumdictionary.io/correspondence-0) 

  

 [![Mathematics & Logic Dictionary](/sites/default/files/styles/large/public/2026-01/Mathematics%20%26%20Logic.png.webp?itok=UhtTRPnp)](/topic-specific-dictionaries/natural-formal-sciences/mathematics-logic)

- Natural & Formal Sciences -

**Mathematics & Logic Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A binary relation or multi-valued mapping between elements of two sets that pairs elements without requiring function-like uniqueness; formally a subset R ⊆ A × B or a rule assigning to each a ∈ A a subset R(a) ⊆ B.