Provided by: librheolef-dev_5.93-2_i386 bug

NAME

       div_div -- -grad div operator

SYNOPSIS

               form (const space V, const space& V, "div_div");

DESCRIPTION

       Assembly  the  form  associated  to  the  grad(div(.))  operator on the
       finite element space V:

                        /
                        |
               a(u,v) = | div(u) div(v) dx
                        |
                        / Omega

       This form is usefull when considering elasticity problem.

EXAMPLE

       Here is an example of the vector-valued form:

               geo omega ("square");
               space V (omega, "P2", "vector");
               form  a (V, V, "div_div");