The journal publishes original research papers of high scientific quality in two areas: Mathematical Modelling, and Numerical Analysis. Mathematical Modelling comprises the development and study — e.g. structure, well-posedness, solution properties — of a mathematical formulation of a problem (or class of problems). Numerical Analysis comprises the formulation and study — e.g. stability, convergence, computational complexity — of a numerical approximation or solution approach to a mathematically formulated problem (or class of problems).