diffusion–Poisson system with non-zero recombination rate. The a-posteriori error is
estimated to enable goal-oriented adaptive mesh refinement for the spatial dimensions,
while the a-priori error is estimated to guarantee linear convergence of the H 1 error. In the
adaptive mesh refinement, efficient estimation of the error indicator gives rise to better error
control. For the stochastic dimensions, we use the multilevel Monte Carlo method to solve …