20. Pattern recognition and statistical learning theory (the theory of support vector machines). See 40], 58]. In this last volume we refer in particular to the papers 63] and 64]. Since this topic is maybe less known to the operator theory community we mention that the support vector method is a general approach to function estimation problems. See 63, p. 26]. We note that the above list and the given references are by no way exhaustive. We refer to the first section of the paper of S. Saitoh in the present volume for another (and mainly different) list of topics where reproducing...