Adolf Abraham Halevi Fraenkel (February 17, 1891 - October 15, 1965), known as Abraham Fraenkel, was a German / Israeli mathematician. February 17 is the 48th day of the year in the Gregorian calendar. ... 1891 was a common year starting on Thursday (see link for calendar). ... October 15 is the 288th day of the year (289th in Leap years). ... 1965 was a common year starting on Friday (link goes to calendar). ... A mathematician is a person whose area of study and research is mathematics. ...

Adolf Fraenkel

Born in Munich, Germany on February 17, 1891, 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 on, and was promoted to professor in 1922. Adolf Fraenkel File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Munich: Frauenkirche and Town Hall steeple Munich (German: München (pronounced listen) is the state capital of the German state of Bavaria. ... February 17 is the 48th day of the year in the Gregorian calendar. ... 1891 was a common year starting on Thursday (see link for calendar). ... With approximately 48,000 students, the Ludwig-Maximilians-University Munich (German: Ludwig-Maximilians-Universität München or LMU) is one of the largest universities in Germany. ... There is no institution called the University of Berlin, but there are four universities in Berlin, Germany: Humboldt University of Berlin (Humboldt-Universität zu Berlin) Technical University of Berlin (Technische Universität Berlin) Free University of Berlin (Freie Universität Berlin) Berlin University of the Arts (Universität der Künste Berlin) This is... The University of Marburg, officially called Philipps-Universität Marburg after its founder, the Landgrave Philipp I of Hesse (usually called the Magnanimous), was founded in 1527 and is the worlds first and oldest Protestant university. ... The University of Breslau (Universität Breslau) was a university in Breslau, Germany, which existed from 1702 until the city with the rest of Silesia was occupied by Stalin and given to the Peoples Republic of Poland after the Second World War. ... 1916 is a leap year starting on Saturday (link will take you to calendar) // Events January-February January 1 -The first successful blood transfusion using blood that had been stored and cooled. ... A professor is a senior teacher, lecturer and researcher, usually in a college or university. ... 1922 was a common year starting on Sunday (see link for calendar). ...

Fraenkel left Marburg six years later, in 1928; after a year of teaching at the University of Kiel, he moved to Jerusalem in 1929, four years after the Hebrew University of Jerusalem's founding, where he spent the rest of his career. He became the first dean of the faculty of mathematics and also served as the rector of the university for a while. 1928 was a leap year starting on Sunday (link will take you to calendar). ... The University of Kiel, in full the Christian-Albrechts-Universität zu Kiel (in short: CAU), is a university in the city of Kiel, Germany. ... 1929 was a common year starting on Tuesday (link will take you to calendar). ... The Hebrew University of Jerusalem (האוניברסיטה העברית בירושלים) is one of Israels largest and most important institutes of higher learning and research. ...

Fraenkel's first work was on Hensel's p-adic numbers and on the theory of rings; he is, however, most well-known for his work on axiomatic set theory, publishing his first major work on the topic ("Einleitung in die Mengenlehre") in 1919. He made two attempts in 1922 and 1925 to put set theory into an axiomatic setting without paradoxes, improving Zermelo's axiomatic system and creating the Zermelo-Fraenkel axioms. The p-adic number systems were first described by Kurt Hensel in 1897. ... In mathematics, ring theory is the study of rings, algebraic structures in which addition and multiplication are defined and have similar properties to those familiar from the integers. ... In mathematics, a ring is an algebraic structure in which addition and multiplication are defined and have similar (but not identical) properties to those familiar from the integers. ... Set theory is a branch of mathematics created principally by the German mathematician Georg Cantor at the end of the 19th century. ... 1919 was a common year starting on Wednesday (see link for calendar). ... 1922 was a common year starting on Sunday (see link for calendar). ... 1925 was a common year starting on Thursday (link will take you to calendar). ... Ernst Friedrich Ferdinand Zermelo (July 27, 1871 – May 21, 1953) was a German mathematician and philosopher. ... The Zermelo-Fraenkel axioms of set theory (ZF) are the standard axioms of axiomatic set theory on which, together with the axiom of choice, all of ordinary mathematics is based in modern formulations. ...

Fraenkel also was interested in the history of mathematics; he wrote about Gauss' works in algebra in 1920 and 1930, and published a biography of Georg Cantor, and published the journal Jewish mathematics and astronomy in 1960; after retiring and being succeeded by his former student Robinson at the Hebrew University, Fraenkel continued teaching at the Bar Ilan University near Tel Aviv. Main article: History of mathematics The evolution of mathematics can be seen to be an ever increasing series of abstractions. ... Johann Carl Friedrich Gauss Johann Carl Friedrich Gauss (Gauß) (April 30, 1777 – February 23, 1855) was a German mathematician and scientist who contributed significantly to many fields, including number theory, analysis, differential geometry, geodesy, magnetism, astronomy and optics. ... Algebra is a branch of mathematics which studies structure and quantity. ... 1920 is a leap year starting on Thursday (link will take you to calendar) // Events January January 7 - Forces of Russian White admiral Kolchak surrender in Krasnoyarsk. ... 1930 is a common year starting on Wednesday. ... Georg Cantor Georg Ferdinand Ludwig Philipp Cantor (March 3, 1845 – January 6, 1918) was a mathematician who was born in Russia and lived in Germany for most of his life. ... 1960 was a leap year starting on Friday (link will take you to calendar). ... Bar-Ilan University (BIU, אוניברסיטת בר-אילן) is a university in Ramat Gan, a suburb of Tel Aviv, Israel. ... Tel Aviv at night Dizengof Center Allenby Street Tel Aviv-Yafo (Hebrew תל אביב-יפו; Arabic تل ابيب-يافا Tal Abīb-Yāfā) is an Israeli city on the coast of the Mediterranean sea. ...

He died on October 15, 1965 in Jerusalem, Israel. October 15 is the 288th day of the year (289th in Leap years). ... 1965 was a common year starting on Friday (link goes to calendar). ... Jerusalem (31°46′ N 35°14′ E; Hebrew: יְרוּשָׁלַיִם Yerushalayim; Arabic: القدس al-Quds; see also names of Jerusalem) is an ancient Middle Eastern city of key importance to the religions of Judaism, Christianity, and Islam. ...