Michael Friedmanhttps://www.mathematics.uni-bonn.de/hsm-school/new-at-hsm/michael-friedman/michael-friedman.jpg/viewhttps://www.mathematics.uni-bonn.de/hsm-school/new-at-hsm/michael-friedman/michael-friedman.jpg/@@images/image-1200-04df0727dcd44aed9ccc693cf21eab2d.jpeg
