It was during his time at the University of Berlin that Riemann worked out his general theory of complex variables that formed the basis of some of his most important work.
Ito ay sa panahon ng kanyang panahon sa Unibersidad ng Berlin na Riemann nagtrabaho ang kanyang pangkalahatang teorya ng kumplikadong variable na nabuo ang mga batayan ng ilang ng kanyang pinaka-mahalaga sa trabaho.