 ##  [Alphabet](/alphabet) 

  ##  [Alphabet](https://mathlogic.quantumdictionary.io/alphabet-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 &amp; Formal Sciences -

**Mathematics &amp; Logic Dictionary**

 
Definition

The finite or countable set of basic symbols from which well-formed expressions of a formal language are constructed.