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  • Alias: del.
  • Prefix operator.

  • f is by default interpreted as Del[f].
  • Used in vector analysis to denote gradient operator and its generalizations.
  • Used in numerical analysis to denote backward difference operator.
  • Also called nabla.
  • Not the same as \[EmptyDownTriangle].
  • See The Mathematica Book: Section 3.10.3Section 3.10.4.
  • See also: \[CapitalDelta], \[PartialD], \[Square].