xtalax
commented
1 year ago Ok, I get it. We check that it is / make the system involute, solve with FD/FV, then get the derivs/mixed derivs numerically and use them to expand the power series about each point, can possibly reduce the number of points needed for an accurate solution. I will be thinking about this.
https://www.sciencedirect.com/science/article/pii/S0747717108801460?via%3Dihub https://arxiv.org/pdf/math/0106090.pdf