[Theseus](https://github.com/facebookresearch/theseus) not only provides non-linear least squares but also has sparse linear solvers including CHOLMOD, LU, and [BaSpaCho (Batched Sparse Cholesky)](https://github.com/facebookresearch/baspacho#baspacho) They should at least be mentioned here.
Theseus not only provides non-linear least squares but also has sparse linear solvers including CHOLMOD, LU, and BaSpaCho (Batched Sparse Cholesky)
They should at least be mentioned here.