Ernst Kausen is a mathematician, computer scientist, and linguist. He studied mathematics, physics, and computer science in Giessen and Hanover and was awarded a doctorate in mathematics. He also studied Egyptology, ancient oriental philology, and comparative linguistics. Following work as an IT analyst in a multinational company from 1977 to 1982, he was a professor of mathematics and theoretical computer science at the TH Mittelhessen University of Applied Sciences from 1982 to 2014. Furthermore, since the 1980s he has been active as a linguist, with a focus on languages of the ancient orient and comparative linguistics. In addition to works on mathematics, he has published numerous works on Egyptology. His most important books on linguistics are Die indogermanischen Sprachen (2012) and the two-volume work Die Sprachfamilien der Welt (2013–15), which for the first time since the 1920s provides an overview of the world’s language groups and their relationships.
As of January 2019