Examiner: Prof. Christoph Schwab (D-MATH)
Co-examiner: Prof. Ralf Hiptmair (D-MATH)
Co-examiner: Prof. Jens Markus Melenk (Vienna University of Technology)
From left: Ralf Hiptmair, Joost Opschoor, Christoph Schwab and Jens Markus Melenk (Department of Mathematics, ETH Zurich)