In this article, we characterize efficient portfolios, i.e. portfolios which are optimal for at least one rational agent, in a very general financial market model of foreign currencies with proportional transaction costs. In our setting, transaction costs may be random, time dependent, have...

In this article, we characterize efficient portfolios, i.e. portfolios which are optimal for at least one rational agent, in a very general financial market model of foreign currencies with proportional transaction costs. In our setting, transaction costs may be random, time dependent, have...

Sustainable development remains high on the international agenda, even as policy makers are distracted by the political and fiscal fall-out of the global financial crisis. Its continued prominence is illustrated by various countries use of fiscal stimulus to fast-track the greening of the...