LaTeX quick reference

Common operations

x^{y} x^{y} x_{y} x_{y} x_{y}^{n} x_{y}^{n}
\frac{a b}{c d} \frac{a b}{c d} \sum \sum \sum_{i} \sum_{i}
\sum_{i}^{n} \sum_{i}^{n} \sqrt{x^2 + y^2} \sqrt{x^2 + y^2} \sqrt[n]{x} \sqrt[n]{x}
\int \int \int_{a}^{b} \int_{a}^{b} \oint \oint
\prod \prod \lim_{x \rightarrow \infty} \frac{x}{x^2} \lim_{x \rightarrow \infty} \frac{x}{x^2}    

Brackets, parentheses, etc

\left(\frac{see\ how}{they\ stretch}\right) \left(\frac{see\ how}{they\ stretch}\right) \left[ \right] \left[ \right] \left\{ \right\} \left\{ \right\}
\langle \rangle \langle \rangle \left| \right| \left| \right|    

Relationships

Relationships

Matrices

Matrix Example 1
Matrix Example 2
Matrix Example 3

Binary Operators

Binary Operators

Large Operators

Large Operators

Greek

Greek

Miscellaneous Symbols

Miscellaneous Symbols

Text Decoration, vectors notation, etc

\hat{a} \hat{a} \vec{a} \vec{a} \textbf{a} \textbf{a}
\tilde{a} \tilde{a} \dot{a} \dot{a} \ddot{a} \ddot{a}
\bar{a} \bar{a} \underline{a} \underline{a}    

Arrows

Arrows

Text and spacing

Note: Use text in equations sparingly. Instead use regular text in the body of the mathbin post. Play around with inline equations ([IEQ] tags).

\mbox{non-math text here} \mbox{non-math text here} thin\,space thin\,space med\:space med\:space
thick\;space thick\;space word\ space word\ space \stackrel{stacked}{stuff} \stackrel{stacked}{stuff}