Bhavesh Shrimali

@PhilippMetsch I had a similar issue when I wasn't saving the mesh properly from `Gmsh`. I went ahead with a brute-force solution (conversion to `int`) in the interest of time....

> ```julia > res(u,v) = gradient(energy,u) > jac(u,du,v) = hessian(energy,u) > ``` Thanks a lot @fverdugo ! Indeed this seems to work and not throw the error anymore. Is building...

> BTW, `μ` and `λ ` are not defined in the MWE. Can you update the code with some values? Done.

Sounds good !! Thanks a lot for the pointers. I will start taking a look at this soon.

Spin is the stiff pde integrator object in chebfun. https://www.chebfun.org/docs/guide/guide19.html The whole idea is to solve Burger's equation, for u(t, x), say on (0, 1] x [0, 1] where the...

For the latter, maybe this works (I should have taken a look at the docs more carefully).. alteast no errors this time ```julia uu = Fun(Fourier(0..1), [c...]) u = Fun(t->uu(t...

I also added a short blurb about the formulation of an incompressible elasticity problem (albeit large deformations), which should translate to the linear case as well. I must confess that...