Wolfram Language & System 10.4 (2016)|Legacy Documentation

This is documentation for an earlier version of the Wolfram Language.View current documentation (Version 11.2)


  • Unicode: 2211.
  • Alias: EscsumEsc.
  • Compound operator with builtin evaluation rules.
  • is by default interpreted as Sum[f,{i,imax}].
  • is by default interpreted as Sum[f,{i,imin,imax}].
  • Not the same as the Greek letter \[CapitalSigma].
Introduced in 1996