Definition:Laplace's Equation

Equation
Laplace's equation is a second order PDE of the form:
 * $\dfrac {\partial^2 w} {\partial x^2} + \dfrac {\partial^2 w} {\partial y^2} + \dfrac {\partial^2 w} {\partial z^2} = 0$

Also see

 * Solution to Laplace's Equation