2 problems

Let $\m{V}\in\mathbb{C}^{N\times L}$, and let $\norm{\m{V}}^*_{\mathcal{A}}$ denote the dual of the atomic norm associated with the multichannel frequency-estimation model. In the…

Let $p$ be a positive integer, let $\boldsymbol{x}\in\mathbb{R}^{p}$, and suppose that … Let $\mathcal{A}_{p-1}$ consist of the signed standard basis vectors and the scaled sign ve…