This is documentation for Mathematica 6, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.2)
Mathematica Character Name

\[Sum]

  • Unicode: 2211.
  • Alias: Esc sum Esc.
  • Compound operator with built-in evaluation rules.
  • ∑_i^(i_(max))f is by default interpreted as Sum[f, {i, imax}].
  • ∑_(i=i_(min))^(i_(max))f is by default interpreted as Sum[f, {i, imin, imax}].