Definition: LaTeX is a document preparation system, also known as math mode in traditional computer software and in printed books. Definition: LaTeX (or "la") is an open-source document preparation system for typesetting mathematical formulas and equations. It was developed by a team of mathematicians at the University of California, Berkeley in 1983 under the supervision of Donald Knuth, then at Stanford University. It allows users to write code directly into documents without the need to use LaTeX's built-in math capabilities. LaTeX provides a wide range of tools and features for typesetting mathematics, including formulas, equations, tables, diagrams, and more.