Friedrich Schilling

From 1899 he was an adjunct professor at the University of Göttingen, where he taught descriptive geometry and oversaw the collection of mathematical equipment.

In his dissertation, he developed a new interpretation of the formulas of spherical trigonometry as a relationship between the invariants of three quadratic forms and their functional determinants.

He took notes on and edited the lectures on higher geometry by Felix Klein from 1892/93, which were initially distributed in autographed form.

[3] Schilling himself wrote several books on non-Euclidean geometry, which were strongly influenced by his geometric intuition.

In November 1933, he signed the Bekenntnis der Professoren an den deutschen Universitäten und Hochschulen zu Adolf Hitler.