Christian Wiener
# Christian Wiener

Ludwig Christian Wiener (7 December 1826 Darmstadt – 31 July 1896 Karlsruhe) was a German mathematician who specialized in descriptive geometry. Wiener was also a physicist and philosopher. In 1863, he was the first person to identify qualitatively the internal molecular cause of Brownian motion.

Wiener was the son of a judge and studied architecture and engineering in Giessen. After the state examination in 1848, he became a teacher at the "Höhere Gewerbeschule" in Darmstadt, today the Technische Universität Darmstadt.

The mathematician Hermann Wiener was his son.

## Selected publications

* Lehrbuch der darstellenden Geometrie, 2 Bände, Teubner, Leipzig 1884, 1887, online at archiv.org: ,
* Die ersten Sätze der Erkenntniß, insbesondere das Gesetz der Ursächlichkeit und die Wirklichkeit der Außenwelt, Berlin, Lüderitz 1874
* Die Freiheit des Willens, Darmstadt, Brill 1894
* Die Grundzüge der Weltordnung, Leipzig, Winter 1863,
* Über Vielecke und Vielflache, Teubner 1864
