2 problems

Let $\boldsymbol{A}\in\mathbb{R}^{m\times n}$ be the least-squares matrix, and let $\boldsymbol{R}$ be computed from $\boldsymbol{A}$ by sketching and $\textsf{QR}$ factorizing the…

Let $f_\mathbb R(x;k)$ denote the probability density function of $|\alpha_\mathbb R||\beta_\mathbb R|$, where $|\alpha_\mathbb R|$ and $|\beta_\mathbb R|$ are independent and each…