Physics-based preconditioning
{"Image DocumentName": "Physics-based preconditioning", "Image ImageDescription": "In Newton iteration, one seeks to obtain a correction ( delta ) to solution, by inverting the Jacobian matrix on (the negative of) the nonlinear residual. A typical operator-split code also derives a delta to the solution, by some implicitly defined means, through a series of implicit and explicit substeps. This implicitly defined mapping from residual to delta is a natural preconditioner. Software must accommodate this!", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}