d'Alembert operator
nounEtymology Named after Jean le Rond d'Alembert (1717–1783), a French mathematician, mechanician, physicist, philosopher, and music theorist.
1
Natural sciences, Physical sciences, Physics A differential operator which may be expressed as ∂_μ∂^μ=∑_(μ=0)³∂/∂x^μ∂/∂x_μ; it is the four-dimensional (Minkowski space) equivalent of the three-dimensional Laplace operator.
- Synonyms
- box operator, d'Alembertian, quabla operator, wave operator