##  [Pseudocharacter](/pseudocharacter) 

  ##  [Pseudocharacter](https://puremath.quantumdictionary.io/pseudocharacter-0) 

  

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- Mathematics & Logic -

**Pure Mathematics Dictionary**

 







 

 

 

 



 

 

 

 

Definition

The minimal cardinal κ of a family of open neighborhoods of a point whose intersection equals that singleton point; the pseudocharacter of a space is the supremum of pseudocharacters of its points and is denoted ψ(x,X) or ψ(X).