 Excluding the Charité medical school, which is co-administered by the university with the Humboldt University, Free University of Berlin is currently the lead university for eight collaborative research centers of the German Research Foundation and also has five DFG research units.It is part of the Berlin University Alliance.As part of the "MATHEON – Mathematics for Key Technologies" research center of the DFG, Free University of Berlin together with the TU Berlin, HU Berlin and the Zuse Institute Berlin is working on mathematical modeling, simulation and optimization of real-world processes.