2 problems

Let $\Omega$ be an irreducible symmetric cone, and let $H$ be a self-scaled barrier on $\Omega$. A self-scaled barrier is isotropic when it is rotationally invariant under the rele…

Let $\mu$ be a Lévy measure and consider the associated nonlocal operator. A function $f$ is a barrier when it is suitable for controlling the operator, in particular when … for so…