لاپلاسی lâplâsi (#)
*Fr.: laplacien*
A differential → *operator*, denoted
∇^{2} = ∇.∇,
which is the sum of all second partial derivatives of a dependant variable:
∇^{2}≡
∂^{2}/∂*x*^{2} +
∂^{2}/∂*y*^{2} +
∂^{2}/∂*z*^{2}, in Cartesian coordinates.
It has numerous applications in several fields of physics and mathematics.
Also called *Laplace operator*. Named after → *Laplace*. |