Neumann János Lajos, this is his birth name, was born on December 28, 1903 in Budapest, in the then Austro-Hungarian Empire. John von Neumann developed mathematical applications in a variety of fields where there were many practical applications. His research concerned among other the Von Neumann-Bernays-Gödel (NBG) set theory, the ergodic theory, the von Neumann algebras and other fields which concerned sciences such as quantum mechanics. He’s also considered one of the fathers of computer science.