[ET Trac] [Einstein Toolkit] #102: Implement 4th order finite differencing in Exact

#102: Implement 4th order finite differencing in Exact -------------------------+-------------------------------------------------- Reporter: eschnett | Owner: Type: enhancement | Status: new Priority: minor | Milestone: Component: Cactus | Version: Keywords: | -------------------------+-------------------------------------------------- Thorn EinsteinInitial/Exact uses finite differencing to calculate the extrinsic curvature. It uses currently 2nd order stencil. The attached patch implements 4th order finite differencing, which reduces the error significantly.