TeXipedia

dotso

Represents a horizontal ellipsis (three dots) followed by a binary operation symbol, commonly used in mathematical sequences or series.

Overview

Provides a specialized form of ellipsis specifically designed for mathematical expressions where the dots are followed by operations like addition or multiplication. This symbol ensures proper spacing and alignment in mathematical contexts.

  • Particularly useful in summations, products, or series where operations continue in a pattern
  • Often seen in algebraic expressions and number theory
  • Preferred over regular dots when showing patterns involving binary operations
  • Maintains consistent mathematical spacing and typography standards

Examples

Showing a sequence with terms omitted in the middle, ending with odd numbers.

1,3,5,… ,991, 3, 5, \dotso, 99 
1, 3, 5, \dotso, 99

Indicating a pattern in an arithmetic sequence with odd numbers.

x1,x3,x5,… ,x2n−1x_1, x_3, x_5, \dotso, x_{2n-1} 
x_1, x_3, x_5, \dotso, x_{2n-1}

Representing an infinite series with odd-indexed terms.

∑k=1∞(a1+a3+a5+… )\sum_{k=1}^\infty (a_1 + a_3 + a_5 + \dotso) 
\sum_{k=1}^\infty (a_1 + a_3 + a_5 + \dotso)