debian man page for div_div

div_div(3rheolef)						    rheolef-6.1 						 div_div(3rheolef)

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");

rheolef-6.1							    rheolef-6.1 						 div_div(3rheolef)