This is documentation for Mathematica 6, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.1)
Mathematica Character Name

\[DoubleContourIntegral]

  • Unicode: 222F.
  • Compound operator.
  • ∯ f ⅆs is by default interpreted as ContourIntegral[f, s].
  • Used to indicate integrals over closed surfaces.