2 problems

Let $\Omega$ be a domain and consider a solution $u$ of a semilinear Dirichlet problem … with $u>0$ in $\Omega$ and $u=0$ on $\partial\Omega$. A solution is stable in the usual var…

Let $\mathbf{D}$ be the transmit covariance matrix under uniform power allocation, with $\mathbf{D}=\frac{p}{n_t}\mathbf{I}_{n_t}$, where $p$ is the allocated power and…