 ##  [Vocabulary](/index.php/vocabulary) 

  ##  [Vocabulary](https://mathlogic.quantumdictionary.io/vocabulary-0) 

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

- Natural &amp; Formal Sciences -

**Mathematics &amp; Logic Dictionary**

 
Definition

The set of nonlogical symbols (predicate, function, and constant symbols) together with any specified sorts that defines the signature of a formal language.