Hi,

So I am working on some plasticity computations in FreeFem++, and I would need to obtain the global stiffness matrix for some other calculations.

I am referring to stiffness matrix of the form

for a single finite element.

Now the above definition is a general FEM definition for a stiffness matrix, so I assume FreeFEM does that one way or another at some point during the computation.

## Question

Since FreeFEM at some point probably computes the global stiffness matrix, is it possible to store it in a local variable for later use?