The Existence of Meromorphic Functions with Prescribed Poles and Principal Parts
The Swedish mathematician Gösta Mittag-Leffler (1846-1927) is well-known for founding Acta Mathematica, the famous international mathematical journal. His mathematical contributions are connected chiefly with complex analysis. The Mittag-Leffler theorem which built on Karl Weierstrass' work asserts the existence of meromorphic function with prescribed poles and principal parts. The main purpo