Laplacian

Stamp:Prinsipi Si $f:\mathrm{\Omega }\to ℝ$ a l'é na fonsion $C^2$ definìa ansima a n'ansem duvert $\mathrm{\Omega }\subseteq {ℝ}^n$, as ciama laplacian d'$f$ la fonsion $\mathrm{\Delta }f=\sum _{i=1}^n\frac{{\partial }^{2}f}{\partial x_i^2}$.
La notassion $\mathrm{\Delta }$ a ven da Gabriel Lamé. Stamp:Fin