Add spaces: HewasappointedafullprofessorattheUniversityofRostockon1April1950buton7September1951HarrySchmidt,whoheldthechairofmathematicsattheMartin-LutherUniversityofHalle-Wittenberg,diedandSchubertacceptedtheofferofthepost,takinguphisdutieson1October1952.
He was appointed a full professor at the University of Rostock on 1 April 1950 but on 7 September 1951 Harry Schmidt , who held the chair of mathematics at the Martin-Luther University of Halle-Wittenberg, died and Schubert accepted the offer of the post, taking up his duties on 1 October 1952.