. One popular assumption for space‐time data is separability of the covariance into purely spatial and temporal factors. In …

conditions. We use a space–time variational formulation in Lebesgue–Bochner spaces yielding a boundedly invertible solution …–Kuhn–Tucker conditions in a natural manner. This results in space–time variational formulations of the adjoint and gradient equation in … simultaneous space–time (tensorproduct) discretization of the optimality system in these Lebesgue–Bochner spaces. Using finite …