He submitted this habilitation thesis in 1901, only two years after his doctorate, consisted of his work on Dirichlet series, a topic in analytic number theory. Frobenius was somewhat critical of the area that Landau worked in, and remarked at times that Landau's work would cease to become important if the Riemann hypothesis were proved.
Siya na isinumite ito habilitation sanaysay sa 1901, lamang ng dalawang taon pagkatapos ng kanyang titulo ng doktor, consisted ng kanyang trabaho sa Dirichlet serye, ng isang paksa sa analytic number theory. Frobenius ay tila kritikal ng mga lugar na Landau nagtrabaho sa, at remarked sa mga oras na Landau ng trabaho ay huminto na maging mahalaga kung ang Riemann palagay ay proved.