Nabla symbol
Symbol used to indicate the del operator / From Wikipedia, the free encyclopedia
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This article is about the symbol. For the mathematical operator notated with it, see Del.
The nabla is a triangular symbol resembling an inverted Greek delta:[1] or ∇. The name comes, by reason of the symbol's shape, from the Hellenistic Greek word νάβλα for a Phoenician harp,[2][3] and was suggested by the encyclopedist William Robertson Smith in an 1870 letter to Peter Guthrie Tait.[2][4][5][6][7]
∇
The nabla symbol is available in standard HTML as ∇
and in LaTeX as \nabla
. In Unicode, it is the character at code point U+2207, or 8711 in decimal notation, in the Mathematical Operators block.
It is also called del.