Helmut Hasse 2026-10-24
A mathematician specializing in algebraic number theory. The Hasse diagram is named after him.[ref]
https://en.wikipedia.org/wiki/Helmut_Hasse. Biographical identity and field
[ref]Portrait of Helmut Hasse by Konrad Jacobs
. Oberwolfach Photo Collection, photograph by Konrad Jacobs, via Wikimedia Commons. CC BY-SA 2.0 Germany. The linked file page identifies the sitter and the photographer. Source. Konrad Jacobs 2026-10-24
A mathematician working in probability theory and ergodic theory, whose photographic collection became a foundation of the Oberwolfach Photo Collection.[ref]
https://www.nat.fau.de/2015/07/29/zum-gedenken-an-prof-dr-konrad-jacobs/. FAU obituary, 29 July 2015, research areas and transfer of the collection in 2005
[ref]https://opc.mfo.de/. Oberwolfach Photo Collection, introductory history and attribution to Konrad Jacobs
Portrait of Konrad Jacobs
. Via Wikimedia Commons; credits and usage information are on the linked source file page. Source. Volker Strassen 2026-10-24
Volker Strassen in 1970
. Photograph credited to Konrad Jacobs, via the Oberwolfach Photo Collection. The file page states Creative Commons Attribution-ShareAlike 2.0 Germany, CC BY-SA 2.0 DE. The remote photograph is linked without a local copy. Source.

