Robert Vrabel was born in Rimavska Sobota, Slovakia in 1967. He received the Masters degree in Applied Mathematical Analysis in 1990 and his Ph.D. in 1998 at the Slovak Academy of Sciences. At the present he is Associate Professor with the Institute of Applied Informatics, Automation and Mechatronics of the Faculty of Materials Science and Technology in Trnava, Slovak University of Technology in Bratislava, Slovakia. His current research interests include control of linear and nonlinear systems, singular perturbations in dynamical systems and qualitative theory of ordinary differential equations generally.
Generalized matrix determinant lemma and the controllability of single input control systems
International Journal of Pure and Applied Mathematics (2017) 116(1)