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\ \[Backslash]
  • Alias: \.
  • Infix operator.
  • x

    y is by default interpreted as Backslash[x,y].
  • Used in mathematics for set difference.
  • Also used to separate arguments of elliptic functions.
  • Sometimes used to indicate x divides y.
  • See The Mathematica Book: Section 1.10.8Section 3.10.4.
  • See also: \[RawBackslash], \[Colon], \[VerticalBar], \[Continuation].