I have uploaded two new preprints in my Publications sections. The first one is joint work with Tjorben Groß and Andreas Wirsen, both from the Fraunhofer Institute for Industrial Mathematics (ITWM) and has the title "Topological solvability and index characterizations for a common DAE power system model". The second one is together with Thomas Berger (University Hamburg) and has the title "Kalman controllability decompositions for differential-algebraic systems".