Jaroslav Kurzweil (, 7 May 1926,

Prague Prague ( ; cs, Praha ; german: Prag, ; la, Praga) is the capital and largest city in the Czech Republic, and the historical capital of Bohemia. On the Vltava river, Prague is home to about 1.3 million people. The city has a temperate ...

– 17 March 2022) was a Czech

mathematician A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, structure, space, models, and change. History On ...

Biography

Born in

Czechoslovakia , rue, Чеськословеньско, , yi, טשעכאסלאוואקיי, , common_name = Czechoslovakia , life_span = 1918–19391945–1992 , p1 = Austria-Hungary , image_p1 ...

, he was a specialist in

ordinary differential equation In mathematics, an ordinary differential equation (ODE) is a differential equation whose unknown(s) consists of one (or more) function(s) of one variable and involves the derivatives of those functions. The term ''ordinary'' is used in contrast w ...

s and defined the

Henstock–Kurzweil integral In mathematics, the Henstock–Kurzweil integral or generalized Riemann integral or gauge integral – also known as the (narrow) Denjoy integral (pronounced ), Luzin integral or Perron integral, but not to be confused with the more general wide ...

in terms of

Riemann sums In mathematics, a Riemann sum is a certain kind of approximation of an integral by a finite sum. It is named after nineteenth century German mathematician Bernhard Riemann. One very common application is approximating the area of functions or ...

, first published in 1957 in the Czechoslovak Mathematical Journal. Kurzweil has been awarded the highest possible scientific prize of Czechia, the "Czech Brain" of the year 2006, as an acknowledgement of his life achievements. With limited opportunities of contact between mathematicians within the

Iron Curtain The Iron Curtain was the political boundary dividing Europe into two separate areas from the end of World War II in 1945 until the end of the Cold War in 1991. The term symbolizes the efforts by the Soviet Union (USSR) to block itself and its s ...

and those from the West, Kurzweil and

Ivo Babuška Ivo M. Babuška (born March 22, 1926, in Prague) is a Czech-American mathematician, noted for his studies of the finite element method and the proof of the Babuška–Lax–Milgram theorem in partial differential equations. One of the celebrated re ...

founded a series of international scientific conferences named EQUADIFF, being held every four years since 1962 alternately in Prague,

Bratislava Bratislava (, also ; ; german: Preßburg/Pressburg ; hu, Pozsony) is the Capital city, capital and largest city of Slovakia. Officially, the population of the city is about 475,000; however, it is estimated to be more than 660,000 — approxim ...

, and

Brno Brno ( , ; german: Brünn ) is a city in the South Moravian Region of the Czech Republic. Located at the confluence of the Svitava and Svratka rivers, Brno has about 380,000 inhabitants, making it the second-largest city in the Czech Republic ...

. He was chief editor of Mathematica Bohemica (then called ''Časopis pro pěstování matematiky'') from 1956 to 1970 and was in its editorial board until 2007. In 2007, Kurzweil delivered a New Year's toast on Czech Television.Ninety years of Jaroslav Kurzweil
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References

* Kurzweil, Jaroslav (2012). Generalized Ordinary Differential Equations: Not Absolutely Continuous Solutions. Series in Real Analysis. 11. World Scientific Publishing Company. . * Jiří Jarník; Štefan Schwabik; Milan Tvrdý; Ivo Vrkoč
Sixty years of Jaroslav Kurzweil.
Czechoslovak Mathematical Journal, Vol. 36 (1986), No. 1, 147–166 * Kurzweil J.. Generalized ordinary differential equations and continuous dependence on a parameter. Czechoslovak Mathe. Journal, 7 (82) 1957, 418–449.

External links

Jaroslav Kurzweil

Mathematics Genealogy Project The Mathematics Genealogy Project (MGP) is a web-based database for the academic genealogy of mathematicians.. By 31 December 2021, it contained information on 274,575 mathematical scientists who contributed to research-level mathematics. For a ty ...

Biography
in Czech {{DEFAULTSORT:Kurzweil, Jaroslav 1926 births 2022 deaths Charles University alumni Czechoslovak mathematicians 20th-century Czech mathematicians 21st-century Czech mathematicians Mathematicians from Prague Recipients of Medal of Merit (Czech Republic)

Biography

See also

References

External links