From a general perspective, we can essentially choose between two classes of regularization methods: those that are based on some kind of "canonical decomposition" such as the QR factorization or the ...

Large sparse linear systems arise in diverse fields such as structural engineering, fluid dynamics, network analysis and machine learning. Direct factorisation techniques often become impractical for ...

Complementarity problems arise in optimisation, game theory, contact mechanics and economic modelling, where one seeks a vector that satisfies a system of inequalities coupled by a zero‐product ...