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Del \[Del]

FilledSmallSquare Alias: AliasIndicatordelAliasIndicator.

FilledSmallSquare Prefix operator.

FilledSmallSquaref is by default interpreted as Del[f].

FilledSmallSquare Used in vector analysis to denote gradient operator and its generalizations.

FilledSmallSquare Used in numerical analysis to denote backward difference operator.

FilledSmallSquare Also called nabla.

FilledSmallSquare Not the same as \[EmptyDownTriangle].

FilledSmallSquare See The Mathematica Book: Section 3.10.3 and Section 3.10.4.

FilledSmallSquare See also: \[CapitalDelta] , \[PartialD] , \[Square] .