Fig. 6

Sparsity pattern of the discrete PGD operators associated with the separated representation (32), for \(N_x = 51\), \(m + 1 = 400\) and \(M = 5\)
Sparsity pattern of the discrete PGD operators associated with the separated representation (32), for \(N_x = 51\), \(m + 1 = 400\) and \(M = 5\)