Georgy Voronoy
Encyclopedia
Georgy Feodosevich Voronoy was a Russian Empire
mathematician
of Ukrainian
origin. Among other things, he defined the Voronoi diagram
.
Voronoy was born in the village of Zhuravky, district of Pyriatin, in Poltava Governorate
of the Russian Empire
(now Varvynsky Raion, Chernihiv Oblast
, Ukraine
).
From 1889, Voronoy studied at Saint Petersburg University
, where he was a student of Andrey Markov
. In 1894 he defended his master's thesis On algebraic integers depending on the roots of an equation of third degree. In the same year, Voronoy became professor at the University of Warsaw
, where he worked on continued fraction
s. In 1897, he defended his doctoral thesis On a generalisation of a continuous fraction.
Following a severe illness, Voronoy died in his home village on November 20, 1908.
Among his students were Boris Delaunay
(Ph.D.
at Kiev University
), and Wacław Sierpiński (Ph.D. at Jagiellonian University
in 1906).
In 2008 Ukraine released two-hryvnia
coins commemorating the centenary of Voronoy's death.
Russian Empire
The Russian Empire was a state that existed from 1721 until the Russian Revolution of 1917. It was the successor to the Tsardom of Russia and the predecessor of the Soviet Union...
mathematician
Mathematician
A mathematician is a person whose primary area of study is the field of mathematics. Mathematicians are concerned with quantity, structure, space, and change....
of Ukrainian
Ukraine
Ukraine is a country in Eastern Europe. It has an area of 603,628 km², making it the second largest contiguous country on the European continent, after Russia...
origin. Among other things, he defined the Voronoi diagram
Voronoi diagram
In mathematics, a Voronoi diagram is a special kind of decomposition of a given space, e.g., a metric space, determined by distances to a specified family of objects in the space...
.
Voronoy was born in the village of Zhuravky, district of Pyriatin, in Poltava Governorate
Poltava Governorate
The Poltava Governorate or Government of Poltava was a guberniya in the historical Left-bank Ukraine region of the Russian Empire, which was officially created in 1802 from the disbanded Malorossiya Governorate which was split between the Chernigov Governorate and Poltava Governorate with an...
of the Russian Empire
Russian Empire
The Russian Empire was a state that existed from 1721 until the Russian Revolution of 1917. It was the successor to the Tsardom of Russia and the predecessor of the Soviet Union...
(now Varvynsky Raion, Chernihiv Oblast
Chernihiv Oblast
Chernihiv Oblast is an oblast of northern Ukraine. The administrative center of the oblast is the city of Chernihiv.-Geography:The total area of the province is around 31,900 km²....
, Ukraine
Ukraine
Ukraine is a country in Eastern Europe. It has an area of 603,628 km², making it the second largest contiguous country on the European continent, after Russia...
).
From 1889, Voronoy studied at Saint Petersburg University
Saint Petersburg State University
Saint Petersburg State University is a Russian federal state-owned higher education institution based in Saint Petersburg and one of the oldest and largest universities in Russia....
, where he was a student of Andrey Markov
Andrey Markov
Andrey Andreyevich Markov was a Russian mathematician. He is best known for his work on theory of stochastic processes...
. In 1894 he defended his master's thesis On algebraic integers depending on the roots of an equation of third degree. In the same year, Voronoy became professor at the University of Warsaw
University of Warsaw
The University of Warsaw is the largest university in Poland and one of the most prestigious, ranked as best Polish university in 2010 and 2011...
, where he worked on continued fraction
Continued fraction
In mathematics, a continued fraction is an expression obtained through an iterative process of representing a number as the sum of its integer part and the reciprocal of another number, then writing this other number as the sum of its integer part and another reciprocal, and so on...
s. In 1897, he defended his doctoral thesis On a generalisation of a continuous fraction.
Following a severe illness, Voronoy died in his home village on November 20, 1908.
Boris Delaunay
Boris Nikolaevich Delaunay or Delone was one of the first Russian mountain climbers and a Soviet/Russian mathematician, and the father of physicist Nikolai Borisovich Delone....
(Ph.D.
Doctor of Philosophy
Doctor of Philosophy, abbreviated as Ph.D., PhD, D.Phil., or DPhil , in English-speaking countries, is a postgraduate academic degree awarded by universities...
at Kiev University
Kiev University
Taras Shevchenko University or officially the Taras Shevchenko National University of Kyiv , colloquially known in Ukrainian as KNU is located in Kiev, the capital of Ukraine. It is the third oldest university in Ukraine after the University of Lviv and Kharkiv University. Currently, its structure...
), and Wacław Sierpiński (Ph.D. at Jagiellonian University
Jagiellonian University
The Jagiellonian University was established in 1364 by Casimir III the Great in Kazimierz . It is the oldest university in Poland, the second oldest university in Central Europe and one of the oldest universities in the world....
in 1906).
In 2008 Ukraine released two-hryvnia
Ukrainian hryvnia
The hryvnia, sometimes hryvnya or grivna ; sign: ₴, code: , has been the national currency of Ukraine since September 2, 1996. The hryvnia is subdivided into 100 kopiyok. In medieval times, it was a currency of Kievan Rus'....
coins commemorating the centenary of Voronoy's death.