thumb|250px|adolf abraham halevi fraenkel in the 1940s abraham halevi (adolf) fraenkel (; february 17, 1891, munich, germany â october 15, 1965, jerusalem, israel), known as abraham fraenkel, was a german-born israeli mathematician. he was an early zionist and the first dean of mathematics at the hebrew university of jerusalem. he is known for his contributions to axiomatic set theory, especially his addition to ernst zermelo's axioms which resulted in zermeloâfraenkel axioms. ==life== fraenkel studied mathematics at the university of munich, university of berlin, university of marburg and university of breslau; 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 for a while served as rector of the university. fraenkel was a fervent zionist and as such was a member of jewish national council and the jewish assembly of representatives under the british mandate. he also belonged to the mizrachi religious wing of zionism, which promoted jewish religious education and schools, and which advocated giving the chief rabbinate authority over marriage and divorce. ==mathematician== fraenkel's early work was on kurt hensel's p-adic numbers and on the theory of rings. he is best known for his work on axiomatic set theory, publishing his first major work on the topic ("einleitung in die mengenlehre") in 1919. in 1922 and 1925, he published two papers that sought to improve zermelo's axiomatic system; the result is the zermeloâfraenkel axioms. fraenkel worked in set theory and foundational mathematics. fraenkel also was interested in the history of mathematics, writing in 1920 and 1930 about gauss' works in algebra, and he published a biography of georg cantor. 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 (near tel aviv). == awards == * in 1956, fraenkel was awarded the israel prize, for exact sciences.{{cite web| title = israel prize official site - recipients in 1956 (in hebrew)| url = http://cms.education.gov.il/educationcms/units/prasisrael/tashyag/tashkab_tashyag_rikuz.htm?dictionaryke
1891_births 1965_deaths 20th-century_mathematicians Bar-Ilan_University_faculty German_Jews German_emigrants_to_Mandatory_Palestine Hebrew_University_of_Jerusalem_faculty Humboldt_University_of_Berlin_alumni Israel_Prize_in_exact_science_recipients_who_were_mathematicians Israeli_Jews Israeli_mathematicians Jews_in_Mandatory_Palestine Ludwig_Maximilian_University_of_Munich_alumni Members_of_the_Assembly_of_Representatives_(Mandatory_Palestine) Members_of_the_Israel_Academy_of_Sciences_and_Humanities People_from_Munich Set_theorists University_of_Breslau_alumni University_of_Kiel_faculty University_of_Marburg_alumni Zionists