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Stephan Cohn-Vossen

 

 
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Stephan Cohn-Vossen
 
 
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Stefan or Stephan Cohn-Vossen (28 May1902, Breslau, Germany
Germany

Germany , officially the Federal Republic of Germany , is a country in Central Europe. It is bordered to the north by the North Sea, Denmark, and the Baltic Sea; to the east by Poland and the Czech Republic; to the south by Austria and Switzerland; and to the west by France, Luxembourg, Belgium, and the Netherlands....
 – 25 June1936, Moscow
Moscow

Moscow is the capital and the largest types of inhabited localities in Russia of the Russian Federation. It is also the largest European cities and metropolitan areas, with the Moscow metropolitan area ranking among the largest urban areas in the world....
, USSR) was a mathematician
Mathematician

A mathematician is a person whose primary area of study and/or research is the field of mathematics....
, now best known for his collaboration with David Hilbert
David Hilbert

David Hilbert was a Germany mathematician, recognized as one of the most influential and universal mathematicians of the 19th and early 20th centuries....
 on the 1932 book Anschauliche Geometrie, translated into English
English language

English is a West Germanic language that originated in Anglo-Saxon England and has lingua franca status in many parts of the world as a result of the military, economic, scientific, political and cultural influence of the British Empire in the 18th, 19th and early 20th centuries and that of the United States from the mid 20th century onwa...
 as Geometry and the Imagination. The Cohn-Vossen transformation is also named for him.

He was born in Breslau (now Wroclaw
Wroclaw

Wroclaw is the chief city of the historical region of Lower Silesia in south-western Poland, situated on the Oder River river. Over the centuries the city has been part of Kingdom of Poland , Bohemia, Austria, Prussia, and Germany....
 in Poland
Poland

Poland , officially the Republic of Poland , is a country in Central Europe. Poland is bordered by Germany to the west; the Czech Republic and Slovakia to the south; Ukraine, Belarus and Lithuania to the east; and the Baltic Sea and Kaliningrad Oblast, a Russian Enclave and exclave, to the north....
). He wrote a 1924 doctoral dissertation at the University of Breslau.






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Stefan or Stephan Cohn-Vossen (28 May1902, Breslau, Germany
Germany

Germany , officially the Federal Republic of Germany , is a country in Central Europe. It is bordered to the north by the North Sea, Denmark, and the Baltic Sea; to the east by Poland and the Czech Republic; to the south by Austria and Switzerland; and to the west by France, Luxembourg, Belgium, and the Netherlands....
 – 25 June1936, Moscow
Moscow

Moscow is the capital and the largest types of inhabited localities in Russia of the Russian Federation. It is also the largest European cities and metropolitan areas, with the Moscow metropolitan area ranking among the largest urban areas in the world....
, USSR) was a mathematician
Mathematician

A mathematician is a person whose primary area of study and/or research is the field of mathematics....
, now best known for his collaboration with David Hilbert
David Hilbert

David Hilbert was a Germany mathematician, recognized as one of the most influential and universal mathematicians of the 19th and early 20th centuries....
 on the 1932 book Anschauliche Geometrie, translated into English
English language

English is a West Germanic language that originated in Anglo-Saxon England and has lingua franca status in many parts of the world as a result of the military, economic, scientific, political and cultural influence of the British Empire in the 18th, 19th and early 20th centuries and that of the United States from the mid 20th century onwa...
 as Geometry and the Imagination. The Cohn-Vossen transformation is also named for him.

He was born in Breslau (now Wroclaw
Wroclaw

Wroclaw is the chief city of the historical region of Lower Silesia in south-western Poland, situated on the Oder River river. Over the centuries the city has been part of Kingdom of Poland , Bohemia, Austria, Prussia, and Germany....
 in Poland
Poland

Poland , officially the Republic of Poland , is a country in Central Europe. Poland is bordered by Germany to the west; the Czech Republic and Slovakia to the south; Ukraine, Belarus and Lithuania to the east; and the Baltic Sea and Kaliningrad Oblast, a Russian Enclave and exclave, to the north....
). He wrote a 1924 doctoral dissertation at the University of Breslau. He became a professor at the University of Cologne
University of Cologne

The University of Cologne is one of the oldest University in Europe and, with over 44,000 students, one of the largest universities in Germany....
 in 1930.

He was barred from lecturing in 1933 under Nazi
Nazism

Nazism, officially National Socialism , refers to the ideology and practices of the National Socialist German Workers? Party under Adolf Hitler, and the policies adopted by the dictatorial government of Nazi Germany from 1933 to 1945....
 racial legislation, because he was Jew
Jew

A Jew is a member of the Jewish people, an ethnoreligious group that traces its ancestry to the Israelites or Hebrews of the Ancient Near East....
ish. In 1934 he emigrated to the USSR, with some help from Herman Müntz
Herman Müntz

Herman M?ntz was a Germany mathematician, now remembered for the M?ntz approximation theorem.He was born in L?dz in a secular Jewish family, who had adopted a German spelling of the surname Minc....
. While there, he taught at Leningrad University. He died in Moscow
Moscow

Moscow is the capital and the largest types of inhabited localities in Russia of the Russian Federation. It is also the largest European cities and metropolitan areas, with the Moscow metropolitan area ranking among the largest urban areas in the world....
 from pneumonia
Pneumonia

Pneumonia is an Inflammation illness of the lung. Frequently, it is described as lung parenchyma/alveolus inflammation and abnormal alveolar filling with fluid ....
.

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  • (in Russian
    Russian language

    Russian is the most geographically widespread language of Eurasia, the most widely spoken of the Slavic languages, and the largest native language in Europe....
    )