Career
An assistant to the physicist Ernst Mach, he had a talent for mathematics, but disbelieved the existence of small particles like electrons and atoms. Between 1901 and 1924 he taught physics at the German Technical University in Brno. Corotational derivative expresses the stress tensor in a rotating body.
Jaumann was offered a professorship at Prague University in 1911, but refused the position.
The beleaguered situation of Germans in Prague at the time about which Jaumann was familiar with may also have been a factor in declining the post. Jaumann was apparently the candidate preferred by the Austro-Hungarian ministry presumably because he was Austrian and not a foreigner.
Einstein, under the impression he would not receive the job, however, blamed his "Semitic origin the ministry did not approve ".