The origin of this book can be traced to courses on financial mathematics taught by us at the University of New South Wales in Sydney, Technical University of Warsaw (Politechnika Watszawska) and Institut National Polytechnique de Grenoble. Our initial aim was to write a short text around the material used in two one-semester graduate courses attended by students with diverse disciplinary backgrounds (mathematics, physics, computer science, engineering, economics and commerce). The anticipated d