German mathematician (1849-1925). Autograph letter signed. Göttingen. 4to. 2/3 p. Folded. Some water stains and two punch holes to the left border.
$ 16,080 / 15.000 €
(89667)
To an unnamed colleague: „Ich danke Ihnen und Ihrer Gesellschaft für die freundliche Auszeichnung, die Sie mir haben zu teil werden lassen, ganz besonders. […]“ Felix Klein was a German mathematician whose synthesis of geometry as the study of the properties of a space that are invariant under a given group of transformations, known as the Erlanger Programm, profoundly influenced mathematical development.