Mathematician:Alexander Markowich Ostrowski

Mathematician

Ukrainian mathematician who contributed towards the fields of determinants, linear algebra, algebraic equations, multivariate algebra, formal algebra, number theory, geometry, topology, convergence, theory of real functions, differential equations, differential transformations, theory of complex functions, conformal mappings, numerical analysis and others.

Nationality

Ukrainian

History

• Born: 25 September 1893 in Kiev, Ukraine (then part of the Russian Empire)
• Died: 20 November 1986 in Montagnola, Lugano, Switzerland

Theorems and Conjectures

• Ostrowski's Theorem
• Ostrowski-Hadamard Gap Theorem (with Jacques Hadamard)
• Ostrowski Numeration

Results named for Alexander Markowich Ostrowski can be found here.

Publications

• 1916: Über einige Lösungen der Funktionalgleichung $\map \phi x \cdot \map \phi y = \map \phi {x y}$ (Acta Math. Vol. 41, no. 1: pp. 271 – 284)
• 1922: Bemerkungen zur Theorie der diophantischen Approximationen (Abh. Math. Semin. Univ. Hambg. Vol. 1: pp. 77 – 98)
• 1922: Zu meiner Note: "Bemerkungen zur Theorie der Diophantischen Approximationen" im l.Heft dieses Bandes (Abh. Math. Semin. Univ. Hambg. Vol. 1: pp. 249 – 250)

Also known as

Full name in Russian: Алекса́ндр Ма́ркович Остро́вский.

Sources

• John J. O'Connor and Edmund F. Robertson: "Alexander Markowich Ostrowski": MacTutor History of Mathematics archive