d'Alembert operator
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English[edit]
Etymology[edit]
Named after Jean le Rond d'Alembert (1717–1783), a French mathematician, mechanician, physicist, philosopher, and music theorist.
Noun[edit]
d'Alembert operator (plural d'Alembert operators)
- (physics) A differential operator which may be expressed as ; it is the four-dimensional (Minkowski space) equivalent of the three-dimensional Laplace operator.
Usage notes[edit]
- It may be denoted as (in analogy with the symbol for the Laplacian) or as (in analogy with the symbol for the Laplacian).
- It may also be denoted as .