3 problems

The process under consideration is a random motion with space-varying propagation speed; the paper's abstract describes univariate and planar versions, but the supplied context doe…

Consider a cyclic motion in $\mathbb{R}^n$ with $n+1$ directions, where the directions form a regular or possibly irregular tetrahedron. Let the absolutely continuous component of…

Let $S_u=\{(x,y)\in\mathbb{R}^2:|x|+|y|<u\}$, where $0\leq u\leq ct$, and let $\{(X(t),Y(t))\}_{t\geq 0}$ be the reflecting orthogonal motion, with $Z(t)=|X(t)|+|Y(t)|$. Let…