caa a22 4500 445363185 CHVBK 20180317142921.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s00780-010-0128-6 doi (NATIONALLICENCE)springer-10.1007/s00780-010-0128-6 Minimal sufficient conditions for a primal optimizer innonsmooth utility maximization [Elektronische Daten] [Nicholas Westray, Harry Zheng] We continue the study of utility maximization in the nonsmooth setting and give a counterexample to a conjecture made inDeelstra et al. (Ann. Appl. Probab. 11:1353-1383, 2001) on the optimality of random variables valued in an appropriate subdifferential. We derive minimal sufficient conditions on a random variable for it to be a primal optimizer in the case where the utility function is not strictly concave. Springer-Verlag, 2010 Nonsmooth utility maximization nationallicence Convex duality nationallicence Subdifferential wealth random variables nationallicence Westray Nicholas Department of Mathematics, Humboldt Universität Berlin, Unter den Linden 6, 10099, Berlin, Germany aut Zheng Harry Department of Mathematics, Imperial College, South Kensington, SW7 2AZ, London, UK aut Finance and Stochastics Springer-Verlag 15/3(2011-09-01), 501-512 0949-2984 15:3<501 2011 15 780 https://doi.org/10.1007/s00780-010-0128-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00780-010-0128-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Westray Nicholas Department of Mathematics, Humboldt Universität Berlin, Unter den Linden 6, 10099, Berlin, Germany aut NATIONALLICENCE 700 1- Zheng Harry Department of Mathematics, Imperial College, South Kensington, SW7 2AZ, London, UK aut NATIONALLICENCE 773 0- Finance and Stochastics Springer-Verlag 15/3(2011-09-01), 501-512 0949-2984 15:3<501 2011 15 780 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer