We study cubature formulas on relatively small scattered samples in the unit square, obtained by integrating radial basis function (RBF) interpolants. Numerical tests show that, d...
The ULV decomposition (ULVD) is an important member of a class of rank-revealing two-sided orthogonal decompositions used to approximate the singular value decomposition (SVD). Th...
With respect to a wavelet basis, singular integral operators can be well approximated by sparse matrices, and in [Found. Comput. Math., 2 (2002), pp. 203