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Leopold Fejér

Lipót (Leopold) Fejér
Matematikai konferencia Szegeden, 1928.jpg
Left to right, standing: Frigyes Riesz, Béla Kerékjártó, Alfréd Haar, Gyula Kőnig, Rudolf Ortvay (), on chairs: József Kürschák, George David Birkhoff, O.D. Kellog, Lipót Fejér, sitting on the floor: Tibor Radó, István Lipka (), László Kalmár, Pál Szász ()
Born (1880-02-09)9 February 1880
Pécs, Austria-Hungary
Died 15 October 1959(1959-10-15) (aged 79)
Budapest, Hungary
Residence Hungary
Nationality Hungarian
Fields Mathematics
Institutions University of Pázmány Péter
University of Berlin
Alma mater University of Pázmány Péter
Doctoral advisor Hermann Schwarz
Doctoral students Paul Erdős
John von Neumann
Pál Turán
George Pólya
Tibor Radó
László Kalmár
Marcel Riesz
Gábor Szegő
Michael Fekete
Other notable students Cornelius Lanczos
Known for Harmonic analysis
Fourier series.

Lipót Fejér (or Leopold Fejér, Hungarian pronunciation: [ˈfɛjeːr]; 9 February 1880 – 15 October 1959) was a Hungarian born Jewish mathematician. Fejér was born Leopold Weiss, and changed to the Hungarian name Fejér around 1900.

Fejér studied mathematics and physics at the University of Budapest and at the University of Berlin, where he was taught by Hermann Schwarz. In 1902 he earned his doctorate from Eötvös Loránd University. From 1902 to 1905 Fejér taught at the University of Pázmány Péter and from 1905 until 1911 he taught at Franz Joseph University in Kolozsvár in Austria-Hungary (now Cluj-Napoca in Romania). In 1911 Fejér was appointed to the chair of mathematics at the University of Budapest and he held that post until his death. He was elected corresponding member (1908), member (1930) of the Hungarian Academy of Sciences.

During his period in the chair at Budapest Fejér led a highly successful Hungarian school of analysis. He was the thesis advisor of mathematicians such as John von Neumann, Paul Erdős, George Pólya and Pál Turán.


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