Off-axis paraboloid reflector is a special optical element, its main function is to focus the incident light to a certain distance from the optical axis. The working principle is based on the ...

Let $L$ be a linear, second order parabolic operator in divergence form and let $U$ be a bounded domain in $E^{n + 1}$. The Dirichlet problem for $Lu = 0$ is solved ...

We consider the Heston model as an example of a parameterized parabolic partial differential equation. A space-time variational formulation is derived that allows for parameters in the coefficients ...