Abraham Plessner
Encyclopedia
Abraham Plessner was a Russia
n mathematician. He was born on February 13, 1900 in Lodz
, which is now in Poland
. He studied at secondary school where he was taught in Russian, German, and Polish. He studied at the University of Giessen where he studied under Schlesinger and Friedrich Engel. He also studied at the University of Göttingen and Berlin. He completed his doctorate from the University of Giessen
in 1922.
After completing his doctorate, Plessner worked in Marburg where he published a paper containing what is now called Plessner's theorem. It is a theorem concerning the boundary behaviour of functions meromorphic in the unit disk.
Plessner submitted his habilitation, the extra post-doctoral qualification needed to lecture at a German university, to the faculty at the University of Giessen. He was denied because he happened to be a Russian citizen. He then moved to Moscow and joined the research group of Nikolai Nikolaevich Luzin at Moscow State University
.
In 1939, he became a professor at Moscow State University
. He also held a position at the Mathematical Institute of the USSR Academy of Sciences. In 1949, he was dismissed from both posts.
Plessner is widely viewed as a founder of the Moscow school of functional analysis. He faced financial and health problems in his later years. He died on April 18, 1961 in Moscow.
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...
n mathematician. He was born on February 13, 1900 in Lodz
Lódz
Łódź is the third-largest city in Poland. Located in the central part of the country, it had a population of 742,387 in December 2009. It is the capital of Łódź Voivodeship, and is approximately south-west of Warsaw...
, which is now in Poland
Poland
Poland , officially the Republic of Poland , is a country in Central Europe 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 exclave, to the north...
. He studied at secondary school where he was taught in Russian, German, and Polish. He studied at the University of Giessen where he studied under Schlesinger and Friedrich Engel. He also studied at the University of Göttingen and Berlin. He completed his doctorate from the University of Giessen
University of Giessen
The University of Giessen is officially called the Justus Liebig University Giessen after its most famous faculty member, Justus von Liebig, the founder of modern agricultural chemistry and inventor of artificial fertiliser.-History:The University of Gießen is among the oldest institutions of...
in 1922.
After completing his doctorate, Plessner worked in Marburg where he published a paper containing what is now called Plessner's theorem. It is a theorem concerning the boundary behaviour of functions meromorphic in the unit disk.
Plessner submitted his habilitation, the extra post-doctoral qualification needed to lecture at a German university, to the faculty at the University of Giessen. He was denied because he happened to be a Russian citizen. He then moved to Moscow and joined the research group of Nikolai Nikolaevich Luzin at Moscow State University
Moscow State University
Lomonosov Moscow State University , previously known as Lomonosov University or MSU , is the largest university in Russia. Founded in 1755, it also claims to be one of the oldest university in Russia and to have the tallest educational building in the world. Its current rector is Viktor Sadovnichiy...
.
In 1939, he became a professor at Moscow State University
Moscow State University
Lomonosov Moscow State University , previously known as Lomonosov University or MSU , is the largest university in Russia. Founded in 1755, it also claims to be one of the oldest university in Russia and to have the tallest educational building in the world. Its current rector is Viktor Sadovnichiy...
. He also held a position at the Mathematical Institute of the USSR Academy of Sciences. In 1949, he was dismissed from both posts.
Plessner is widely viewed as a founder of the Moscow school of functional analysis. He faced financial and health problems in his later years. He died on April 18, 1961 in Moscow.