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Happy Birthday
Frigyes Riesz!

Born:  January 22, 1880 in Györ, now Hungary

Died:  February 28, 1956
in Budapest, Hungary.

Riesz was a founder of functional analysis, a topic with many applications in physics.  His work in 1910 marks the start of operator theory.


At a conference in the back: Riesz, Kerékjártó, Haar, Kõnig, Ortvay.
Seated: Kürschak, Birkhoff, Kellos, Fehér 
Front row:  Radó, Lipka, Kalmár, Szász