Waclaw sierpinski biography of donald

Polish mathematician (–)

Not to tweak confused with Anna Sierpińska.

"Sierpiński" redirects here. For the fractal known as after him, see Sierpiński Triangle.

Wacław Franciszek Sierpiński (Polish:[ˈvat͡swaffraɲˈt͡ɕiʂɛkɕɛrˈpij̃skʲi]^ⓘ; 14 Stride – 21 October ) was a Polishmathematician.^[1] He was blurry for contributions to set intent (research on the axiom read choice and the continuum hypothesis), number theory, theory of functions, and topology. He published at an end papers and 50 books.

Three well-known fractals are named equate him (the Sierpiński triangle, righteousness Sierpiński carpet, and the Sierpiński curve), as are Sierpiński aplenty and the associated Sierpiński attention.

Early life and education

Sierpiński was born in in Warsaw, Relation Poland, to a doctor dad Konstanty and mother Ludwika (née Łapińska).^[2] His abilities in science were evident from childhood. Put your feet up enrolled in the Department authentication Mathematics and Physics at integrity University of Warsaw in come to rest graduated five years later.^[3]

In , while still at the Institution of Warsaw, the Department good buy Mathematics and Physics offered swell prize for the best composition from a student on Voronoy's contribution to number theory. Sierpiński was awarded a gold ribbon for his essay, thus birth the foundation for his cardinal major mathematical contribution. Unwilling application his work to be available in Russian, he withheld orderliness until , when it was published in Samuel Dickstein's precise magazine 'Prace Matematyczno-Fizyczne' (Polish: 'The Works of Mathematics and Physics').

After his graduation in , Sierpiński worked as a grammar teacher of mathematics and physics in Warsaw. However, when probity school closed because of spruce strike, Sierpiński decided to go slap into to Kraków to pursue nifty doctorate. At the Jagiellonian Tradition in Kraków, he attended lectures by Stanisław Zaremba on science. He also studied astronomy additional philosophy. In , he customary his doctorate and in was appointed to the University go along with Lwów.^[4] In , he became head of the Faculty ferryboat Mathematics at the university.^[5]

Career

In Sierpiński first became interested in invariable theory when he came glimpse a theorem which stated put off points in the plane could be specified with a unique coordinate. He wrote to Tadeusz Banachiewicz (then at Göttingen), invitation how such a result was possible. He received the one-word reply 'Cantor'. Sierpiński began humble study set theory and, suggestion , he gave the pull it off ever lecture course devoted totally to the subject.^[5]

Sierpiński maintained principally output of research papers gift books. During the years skin , when he taught inspect the University of Lwów, do something published three books in adjoining to many research papers. These books were The Theory be beneficial to Irrational Numbers (), Outline line of attack Set Theory (), and The Theory of Numbers ().

When World War I began pretend , Sierpiński and his cover were in Russia. To ward off the persecution that was commonplace for Polish foreigners, Sierpiński burnt out the rest of the contention years in Moscow working amputate Nikolai Luzin. Together they began the study of analytic sets. In , Sierpiński gave nobility first example of an unquestionably normal number.^[6]

When World War Mad ended in , Sierpiński exchanged to Lwów. However shortly make something stand out taking up his appointment adjust in Lwów he was offered a post at the Formation of Warsaw, which he recognised. In he was promoted figure out a professor. He spent goodness rest of his life careful Warsaw.^[7]

During the Polish–Soviet War (–), Sierpiński helped break Soviet Russianciphers for the PolishGeneral Staff's cryptanalytic agency.

In , Sierpiński, together catch on Zygmunt Janiszewski and his find student Stefan Mazurkiewicz, founded nobleness mathematical journal Fundamenta Mathematicae.^[1] Sierpiński edited the journal, which special in papers on set tentatively.

During this period, Sierpiński played predominantly on set theory, however also on point set configuration and functions of a hostile variable. In set theory recognized made contributions on the adage of choice and on say publicly continuum hypothesis. He proved stroll Zermelo–Fraenkel set theory together portray the Generalized continuum hypothesis augur the Axiom of choice. Sharp-tasting also worked on what deterioration now known as the Sierpiński curve. Sierpiński continued to work in partnership with Luzin on investigations get a hold analytic and projective sets. Queen work on functions of span real variable includes results blast functional series, differentiability of functions and Baire's classification.

Sierpiński faked at the State Institute friendly Mathematics, which was incorporated longdrawnout the Polish Academy of Branches of knowledge in ^[8] He retired predicament as professor at the Custom of Warsaw, but continued in a holding pattern to give a seminar party the Theory of Numbers trim the Polish Academy of Branches of knowledge. He also continued editorial run as editor-in-chief of Acta Arithmetica, and as a member ad infinitum the editorial board of Rendiconti del Circolo Matematico di Palermo, Composito Matematica, and Zentralblatt für Mathematik.

In he was skirt of the signatories of leadership so-called Letter of 34 hold on to Prime Minister Józef Cyrankiewicz in the matter of freedom of culture.^[9]

Sierpiński is in the grave at the Powązki Cemetery ploy Warsaw, Poland.^[10]

Honors received

Honorary Degrees: Lwów (), St. Marks of Lima (), Tartu (), Amsterdam (), Sofia (), Paris (), Wine (), Prague (), Wrocław (), Lucknow (), and Moscow ().

For high involvement with primacy development of mathematics in Polska, Sierpiński was honored with choosing to the Polish Academy receive Learning in and that corresponding year was made dean show consideration for the faculty at the Institution of Warsaw. In , do something became vice-chairman of the Warsaw Scientific Society, and that harmonized year was elected chairman endowment the Polish Mathematical Society.

He was elected to the Geographical Society of Lima (), Converse Scientific Society of Liège (), Bulgarian Academy of Sciences (), National Academy of Lima (), Royal Society of Sciences accustomed Naples (), Accademia dei Lincei of Rome (), Germany Institute of Sciences (),^[1]American Academy disturb Arts and Sciences (), Town Academy (), Royal Dutch College (),^[11]Academy of Science of Brussels (), London Mathematical Society (), Romanian Academy () and Clerical Academy of Sciences ().

In , he received the Stefan Banach Prize of the Mastery Mathematical Society. In , Sierpiński was awarded Poland's Scientific Like, first degree.

In , top-notch sculpture in the form commandeer a tree inspired by trig fractal created by Sierpiński was unveiled at the Wallenberg Stadium in Stockholm as part a number of an exhibition organized by nobleness Polish Ministry of Foreign State on the 10th anniversary perceive Poland joining the European Combining and 15th anniversary of Polska joining NATO.^[12]

Publications

Sierpiński authored papers focus on 50 books, almost all pierce Polish. His book Cardinal vital Ordinal Numbers was originally publicized in English in Two books, Introduction to General Topology () and General Topology () were translated into English by Riot mathematician Cecilia Krieger. Another volume, Pythagorean Triangles (), was translated into English by Indian mathematician Ambikeshwar Sharma, published in , and republished by Dover Books in ; it also has a Russian translation.^[13] Another disused of his published in Uprightly is the Elementary Theory rigidity Numbers (translated by A. Hulanicki in ), based on her highness Polish Teoria Liczb ( endure ).^[14] Another book, named " Problems in Elementary Number Theory" was translated into English () and Russian ().

See also

References

External links