eldorado.tu-dortmund.de/server/api/core/bitstreams/772a2054-10d2-4df5-99b9-882170004cc2/content
of interior grid points on level : , so that = 9 = # , and let #,: = =: + . . . + = 9 , so that #,0 = # and #, 9 = # , with the convention #,: = 0 for : > 9 . The (: are constructed as 2 × 3 block matrices [...] solution of the original problem is G = (G̃. The transformation matrix ( is given as a product ( 9 . . . (1 for 9 steps of refinement, where each factor (: is a square version of the interpolation (or prolongation) [...] the representation with respect to a generating system (comprising 9 levels) G = 1 is possible by means of a transformation matrix ( = ( 9 . . . (1, that is now rectangular (( ∈ R#×# ). In order to describe …