Optimal geometric multigrid preconditioners for HDG-P0 schemes for the reaction-diffusion equation and the generalized Stokes equations.
Guosheng FuWenzheng KuangPublished in: CoRR (2022)
Keyphrases
- diffusion equation
- partial differential equations
- numerical scheme
- boundary conditions
- anisotropic diffusion
- reaction diffusion
- finite difference
- diffusion process
- image enhancement
- linear systems
- diffusion coefficient
- scale space
- numerical solution
- numerical integration
- edge preserving
- gaussian kernel
- multiscale
- image restoration
- nonlinear diffusion
- multiresolution
- numerical methods
- steady state
- scale spaces
- higher order
- image analysis
- noise removal
- image processing
- differential equations
- edge detection