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librheolefdev_5.932_i386 NAME
2D_D  div 2D operator
SYNOPSIS
form (const space V, const space& V, "2D_D");
DESCRIPTION
Assembly the form associated to the div(2D(.)) components of the
operator on the finite element space V:
/

a(u,v) =  2 Dij(ui) Dij(vj) dx

/ Omega
where
1 ( d ui d uj )
Dij(u) =  (  +  )
2 ( d xj d xi )
This form is usefull when considering elasticity or Stokes problems.
EXAMPLE
Here is an example of the vectorvalued form:
geo omega ("square");
space V (omega, "P2", "vector");
form a (V, V, "2D_D");
Note that a factor two is here applied to the form. This factor is
commonly used in practice.