The model is a subdiffusion-type fractional degenerate parabolic equation. We consider two
inverse source problems with power vertical diffusion coefficients, including the well-known …

First, we prove minimum principle to parabolic degenerate initial boundary value problems
in order to provide positivity of the continuous solutions. Then we construct a fitted finite …

A time-dependent removal model for air pollutants from an elevated source is considered. It
leads to solving numerically linear inverse problem for a space degenerate ultraparabolic …

Consider the concentration convection-diffusion process of air-pollution with time-dependent
vertical diffusion coefficient modeled by a degenerate parabolic equation. We aim to identify …

We propose a time-transformation method to solve the inverse problem of determining the
time-dependent diffusion coefficient in parabolic equations. On the first stage by a …