Alexander Ostrowski


































Alexander Ostrowski
Alexander Ostrowski.jpg
Born
(1893-09-25)25 September 1893

Kiev, Russian Empire

Died 20 November 1986(1986-11-20) (aged 93)

Montagnola, Lugano, Switzerland

Scientific career
Doctoral advisor
Edmund Landau
Felix Klein
Other academic advisors
Dmitry Grave
Kurt Hensel
Doctoral students
Theodore Motzkin
Walter Gautschi
Stefan E. Warschawski
Influences
David Hilbert
Erich Hecke


Alexander Markowich Ostrowski (Ukrainian: Олександр Маркович Островський; Russian: Алекса́ндр Ма́ркович Остро́вский; 25 September 1893, in Kiev, Russian Empire – 20 November 1986, in Montagnola, Lugano, Switzerland) was a mathematician.


His father Mark having been a merchant, Alexander Ostrowski attended the Kiev College of Commerce, not a high school, and thus had an insufficient qualification to be admitted to university. However, his talent did not remain undetected: Ostrowski's mentor, Dmitry Grave, wrote to Landau and Hensel for help.


Subsequently, Ostrowski began to study mathematics at Marburg University under Hensel's supervision in 1912. During the World War I he was interned, but thanks to the intervention of Hensel, the restrictions on his movements were eased somewhat, and he was allowed to use the university library.


After the war had ended Ostrowski moved to Göttingen where he wrote his doctoral dissertation and was influenced by Hilbert, Klein and Landau. In 1920, after having obtained his doctorate, Ostrowski moved to Hamburg where he worked as Hecke's assistant and finished his habilitation in 1922. In 1923 he returned to Göttingen, and in 1928 became Professor of Mathematics at Basel, until retirement in 1958. In 1950 Ostrowski obtained Swiss citizenship. After retirement he still published scientific papers until his late eighties.



See also



  • Ostrowski's theorem

  • Ostrowski–Hadamard gap theorem

  • Ostrowski numeration

  • Ostrowski Prize



External links



  • Ostrowski Foundation website: short biography


  • O'Connor, John J.; Robertson, Edmund F., "Alexander Ostrowski", MacTutor History of Mathematics archive, University of St Andrews.mw-parser-output cite.citation{font-style:inherit}.mw-parser-output q{quotes:"""""""'""'"}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}.


  • Alexander Ostrowski at the Mathematics Genealogy Project

  • Gautschi, Walter, Alexander M. Ostrowski (1893-1986): His life, work, and students









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