A punctuation symbol representing ellipsis or continuation in sequences, series, and mathematical expressions.
Examples
Sequence continuation
1, 2, 3, \dots, n
Matrix elements
\begin{pmatrix} a_{11} & a_{12} & \dots & a_{1n} \\ a_{21} & a_{22} & \dots & a_{2n} \\ \dots & \dots & \dots & \dots \\ a_{m1} & a_{m2} & \dots & a_{mn} \end{pmatrix}
Sum with many terms
S = x_1 + x_2 + x_3 + \dots + x_n