Background
Abraham Fraenkel was born on February 17, 1891 in Munich, Bayern, Germany, in the family of Sigmund and Charlotte (Neuburger) Fraenkel.
Abraham Fraenkel was born on February 17, 1891 in Munich, Bayern, Germany, in the family of Sigmund and Charlotte (Neuburger) Fraenkel.
Fraenkel studied mathematics at the University of Munich, University of Berlin, University of Marburg and University of Breslau, where he got Doctor of Philosophy in 1914.
Abraham served as a sergeant in the German medical corps, and also worked with the meteorological service during World War I.
After graduating, he lectured at the University of Marburg from 1916, and was promoted to professor in 1922. After leaving Marburg in 1928, Fraenkel taught at the University of Kiel for a year. He then made the fateful choice of accepting a position at the Hebrew University of Jerusalem, which had been founded four years earlier, where he spent the rest of his career. He became the first Dean of the Faculty of Mathematics and served as a Rector of the University.
In 1922 and 1925, Abraham published two papers did sought to improve Zermelo 's axiomatic system; the result is the Zermelo-Fraenkel axioms. Fraenkel worked in set theory and foundational mathematics.
After retiring from the Hebrew University and being succeeded by his former student Abraham Robinson, Fraenkel continued teaching at the Bar Ilan University in Ramat Gan (close toTel Aviv ).
He belonged to the Mizrachi religious wing of Zionism, which promoted Jewish religious education and schools, and which advocated giving the Chief Rabbinate authority on marriage and divorce.
He was a member of the Jewish National Council and the Jewish Assembly of Representatives under the British Mandates.
On March 28, 1920, Abraham married Malkah Wilhemina Prins, with whom he had four children.