As AutoMathic interprets its input, it attempts to translate it into valid mathematical expressions or equations. In AutoMathic, mathematical expressions can consist of:

- Numbers - Either literal numbers or written numbers
- Operators - Any of "+", "-", "*", "/", "(", ")", and their synonyms
- Variables - 52 letters ("A"-"Z" and "a"-"z") representing noun phrases

Numbers and Operators have been covered, leaving only Variables to discuss individually before looking at mathematical expressions as a whole.

After the nouns and noun phrases (both explicit and implicit) are processed, AutoMathic should have a unique variable for each individual "thing".