quantum physicist. The family lived in a 19th-century house on Dionisie Lupu Street, close to Lahovari Plaza, in Sector 1 of Bucharest; Țițeica moved there around 1913, when he was elected to the academy. A commemorative plaque was affixed to the house by the city administration in 1998. He died in 1939 in Bucharest and was buried in the city's Bellu Cemetery. A high school in Drobeta-Turnu Severin and a gymnasium in Craiova bear his name, and so does a street in Sector 2 of Bucharest. The Romanian Academy offers an annual "Gheorghe Țițeica Prize" for achievements in mathematics. The logo of the 40th International Mathematical Olympiad, held in Bucharest in 1999, was inspired by Țițeica's 5 lei coin problem. In 1961, Poșta Română issued a 1.55 lei stamp in his honor (Scott #1415); he also figures on a 2 lei stamp from 1945 commemorating the founding of Gazeta Matematică in 1895 (Scott #596). Publications References 1873 births 1939 deaths People from Drobeta-Turnu Severin 19th-century Romanian mathematicians 20th-century Romanian mathematicians Differential geometers Geometers Science communicators Romanian scientists Romanian inventors Carol I National College alumni University of Bucharest alumni University of Paris alumni École Normale Supérieure alumni Titular members of the Romanian Academy Academic staff of the University of Bucharest Academic staff of the Politehnica University of Bucharest Burials at Bellu Cemetery