Math symbols in LaTeX

Relation and operation symbols have short commands. Learn a dozen of them and you can write most physics and calculus formulas. Number set symbols need the amssymb package.

a \le b, \quad a \ge b, \quad a \neq b, \quad a \approx b, \quad a \propto b

\pm \quad \times \quad \div \quad \cdot \quad \infty

\Rightarrow \quad \Leftrightarrow \quad \forall \quad \exists

\mathbb{N} \subset \mathbb{Z} \subset \mathbb{Q} \subset \mathbb{R}

Common mistakes

• <= instead of \le: in math mode it gives two separate characters.
• The letter x as a multiplication sign instead of \times or \cdot.

See also

• Greek letters in LaTeX
• Brackets in LaTeX
• Arrows in LaTeX