@misc{KaiserNeidhardtRehberg2004, author = {Hans-Christoph Kaiser and Hagen Neidhardt and Joachim Rehberg}, title = {Convexity of trace functionals and Schroedinger operators}, institution = {Weierstraß-Institut f{\"u}r Angewandte Analysis und Stochastik (WIAS)}, type = {preprintmatheon}, year = {2004}, }