An unknown m by n matrix X₀ is to be estimated from noisy measurements Y = X₀ + Z, where the noise matrix Z has i.i.d. Gaussian entries. A popular matrix denoising scheme solves the nuclear norm ...

Matrices with displacement structure, such as Pick, Vandermonde, and Hankel matrices, appear in a diverse range of applications. In this paper, we use an extremal problem involving rational functions ...