This Thursday, the 13th of April, at 16.30 Mark Owen will speak about EXISTENCE AND OPTIMALITY ======================== (M. Magill and M. Quinzii, 'Theory of Incomplete Markets') in the Seminarraum 107, 6th floor, green area (TU Wien Freihaus). Further details can be found at http://www.fam.tuwien.ac.at/~gaier/seminar ! ------------------------------------------