Exact exponential ill-conditioning rate resolved for contiguous DFT submatrices, giving tight bound 2G/π for Vandermonde matrices with distinct points.
A spectral FC solver for the compressible Navier–Stokes equations in general domains i: Explicit time-stepping.Journal of Computational Physics, 230(16):6248–6270
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On the exponential rate of the condition number of Fourier submatrices and Vandermonde matrices
Exact exponential ill-conditioning rate resolved for contiguous DFT submatrices, giving tight bound 2G/π for Vandermonde matrices with distinct points.