Michele Rosso <[email protected]> writes: > So should I always use an odd number of grid points? > There is no way around this?
If you want to use regular geometric coarsening, then yes. That *is* regular node-centered coarsening. Just consider the base case of one element: o ------- o Split that in two: o -- o -- o Look, an odd number of vertices, and as we keep refining, it will stay odd. You can use AMG or write your own interpolation if you want irregular coarsening.
