##  [Signature Size](/signature-size) 

  ##  [Signature Size](https://mathlogic.quantumdictionary.io/signature-size-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

The number of distinct nonlogical symbols in a language's signature, typically counting function symbols, predicate symbols and constant symbols (often treating a symbol together with its arity as a distinct entry depending on convention).