Complex sentence: Aurel Friedrich Wintner (8 April 1903, Budapest, Hungary--15 January 1958, Baltimore, Maryland, USA) was a mathematician who published research in mathematical analysis, number theory, differential equations and probability theory.
Split into simpler sentences: Aurel Friedrich Wintner (8 April 1903, Budapest, Hungary--15 January 1958, Baltimore, Maryland, USA) was a mathematician. He published research in mathematical analysis, number theory, differential equations and probability theory.