How does one obtain the LLT factorization from SimplicialCholesky? As far as I can tell, there doesn't seem to be a method that returns this. Also, it seems that the LLT class doesn't work with sparse matrices. Is this correct? Is there any way to use Eigen to obtain a Cholesky factorization of a sparse matrix?

Thanks.

Indeed, these methods are missing. I'll add them soon.