Ray.JPG 1 Ray.JPG2 image/jpeg Type image/jpeg Dimension Dimension 3500x2720 Size File size 1.7 MB Download2 View full-size image1 Linkshttps://www.mathematics.uni-bonn.de/en/people/pictures/ray.jpg/image_view_fullscreenhttps://www.mathematics.uni-bonn.de/en/people/pictures/ray.jpg/@@download/image/Ray.JPG