In a complete financial market every contingent claim can be hedged perfectly. In an incomplete market it is possible to stay on the safe side by superhedging. But such strategies may require a large amount of initial capital. Here we study the question what an investor can do who is unwilling...

Problems arising in Finance have become a significant source of new developments in Stochastic Analysis. We discuss some recent case studies, in particular some decomposition and representation theorems which are motivated by problems of hedging derivatives and of intertemporal consumption choice.

Das Buch ist eine Einführung in die Finanzmathematik. Der erste Teil des Buchs untersucht ein einfaches einperiodiges Modell, das als Grundlage für spätere Entwicklungen dient. Im zweiten Teil wird die Idee des dynamischen Hedgings von Eventualforderungen in einem mehrperiodigen Rahmen entwickelt

We introduce the notion of a convex measure of risk, an extension of the concept of a coherent risk measure defined in Artzner et aL (1999), and we prove a corresponding extension of the representation theorem in terms of probability measures on the underlying space of scenarios. As a case...