In 1849 he returned to Göttingen and his Ph.D. thesis, supervised by Gauss, was submitted in 1851. However it was not only Gauss who strongly influenced Riemann at this time. Weber had returned to a chair of physics at Göttingen from Leipzig during the time that Riemann was in Berlin, and Riemann was his assistant for 18 months.
Sa 1849 siya bumalik sa Gottingen at ang kanyang Ph.D. sanaysay, supervised by gauss, ay isinumite sa 1851.