grad_grad(7)
NAME
grad_grad -- -Laplacian operator
SYNOPSIS
form(const space V, const space& V, "grad_grad");
DESCRIPTION
Assembly the form associated to the Laplacian operator on a finite element space @tex $V$: $$ a(u,v) = int_ega 0bla u . 0bla v dx $$ for all
$u,v in V$. @end tex
The V space may be a either `P1', `P2' or `P1d' finite element space.
See also form(3) and space(3).
EXAMPLE
- The following piece of code build the Laplacian form associated to the
`P1' approximation:
- geo g("square");
space V(g, "P1");
form a(V, V, "grad_grad");