Euler's Eyes
2026-10-31
History of Mathematics
Page 259 of 270
Image credits
Historical images and photographs
All come from Wikimedia Commons. We use the files or the thumbnails provided by Commons, reduced to at most 800 pixels wide, with no other editing.
- Portrait of Bernhard Riemann from 1863: source page · public domain.
- The young Riemann, photograph from the 1850s: source page · public domain.
- Stone in memory of Riemann beside the church of Breselenz, photo by Felina Katarina Schulz: source page · CC BY-SA 4.0.
- Plaque on a house in Göttingen where Riemann lived, photo by Manecke: source page · CC BY-SA 3.0.
- Riemann surface of the square root, figure by Leonid 2 (PNG version rendered by Commons from the SVG): source page · CC BY-SA 3.0.
- Riemann’s gravestone in the cemetery of Biganzolo, photo by g.rondena: source page · public domain.
Figures made for the blog
The cover and the four interactive figures (Riemann sums, the rearrangement of the alternating harmonic series, the count of primes with the function R(x), and the zeta function on the critical line) are original illustrations, with text in each of the site’s languages.
Record
The file data/riemann_imagens.json records the source, licence, verification date and SHA-256 hash of each downloaded image. The historical sources for each topic appear at the end of each post.
All topics on Bernhard Riemann · ← The legacy of Bernhard Riemann