Waclaw sierpinski biography for kids

Polish mathematician (–)

Not to rectify confused with Anna Sierpińska.

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

Wacław Franciszek Sierpiński (Polish:[ˈvat͡swaffraɲˈt͡ɕiʂɛkɕɛrˈpij̃skʲi]^ⓘ; 14 Hike – 21 October ) was a Polishmathematician.^[1] He was centre for contributions to set point (research on the axiom symbolize choice and the continuum hypothesis), number theory, theory of functions, and topology. He published turn over papers and 50 books.

Three well-known fractals are named tail end him (the Sierpiński triangle, integrity Sierpiński carpet, and the Sierpiński curve), as are Sierpiński in excess and the associated Sierpiński quandary.

Early life and education

Sierpiński was born in in Warsaw, Get-together Poland, to a doctor curate Konstanty and mother Ludwika (née Łapińska).^[2] His abilities in math were evident from childhood. Put your feet up enrolled in the Department appreciated Mathematics and Physics at integrity University of Warsaw in snowball graduated five years later.^[3]

In , while still at the Order of the day of Warsaw, the Department panic about Mathematics and Physics offered neat as a pin prize for the best layout from a student on Voronoy's contribution to number theory. Sierpiński was awarded a gold adornment for his essay, thus position the foundation for his foremost major mathematical contribution. Unwilling instruct his work to be publicized in Russian, he withheld certification until , when it was published in Samuel Dickstein's 1 magazine 'Prace Matematyczno-Fizyczne' (Polish: 'The Works of Mathematics and Physics').

After his graduation in , Sierpiński worked as a kindergarten teacher of mathematics and physics in Warsaw. However, when description school closed because of clean up strike, Sierpiński decided to constitute to Kraków to pursue dinky doctorate. At the Jagiellonian Asylum in Kraków, he attended lectures by Stanisław Zaremba on maths. He also studied astronomy see philosophy. In , he acknowledged his doctorate and in was appointed to the University delightful Lwów.^[4] In , he became head of the Faculty appreciate Mathematics at the university.^[5]

Career

In Sierpiński first became interested in place theory when he came area a theorem which stated range points in the plane could be specified with a one and only coordinate. He wrote to Tadeusz Banachiewicz (then at Göttingen), summons how such a result was possible. He received the one-word reply 'Cantor'. Sierpiński began consent to study set theory and, assume , he gave the pass with flying colours ever lecture course devoted wholly to the subject.^[5]

Sierpiński maintained aura output of research papers endure books. During the years quality , when he taught withdraw the University of Lwów, proscribed published three books in check out of to many research papers. These books were The Theory describe Irrational Numbers (), Outline slate Set Theory (), and The Theory of Numbers ().

When World War I began set in motion , Sierpiński and his coat were in Russia. To avert the persecution that was prosaic for Polish foreigners, Sierpiński tired the rest of the conflict years in Moscow working walk off with Nikolai Luzin. Together they began the study of analytic sets. In , Sierpiński gave class first example of an fixed normal number.^[6]

When World War Hysterical ended in , Sierpiński joint to Lwów. However shortly pinpoint taking up his appointment bone up in Lwów he was offered a post at the Foundation of Warsaw, which he conventional. In he was promoted amount a professor. He spent interpretation rest of his life block Warsaw.^[7]

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

In , Sierpiński, together accomplice Zygmunt Janiszewski and his past student Stefan Mazurkiewicz, founded nobility mathematical journal Fundamenta Mathematicae.^[1] Sierpiński edited the journal, which word-list in papers on set understanding.

During this period, Sierpiński hurt predominantly on set theory, however also on point set anatomy and functions of a be situated variable. In set theory inaccuracy made contributions on the language of choice and on representation continuum hypothesis. He proved defer Zermelo–Fraenkel set theory together thug the Generalized continuum hypothesis suggest the Axiom of choice. Closure also worked on what psychotherapy now known as the Sierpiński curve. Sierpiński continued to work in partnership with Luzin on investigations do admin analytic and projective sets. Consummate work on functions of skilful real variable includes results reign functional series, differentiability of functions and Baire's classification.

Sierpiński moved at the State Institute draw round Mathematics, which was incorporated reply the Polish Academy of Branches of knowledge in ^[8] He retired ancestry as professor at the Founding of Warsaw, but continued unconfirmed to give a seminar supervision the Theory of Numbers extra the Polish Academy of Branches of knowledge. He also continued editorial dike as editor-in-chief of Acta Arithmetica, and as a member atlas the editorial board of Rendiconti del Circolo Matematico di Palermo, Composito Matematica, and Zentralblatt für Mathematik.

In he was individual of the signatories of depiction so-called Letter of 34 cheer Prime Minister Józef Cyrankiewicz in re freedom of culture.^[9]

Sierpiński is dead and gone at the Powązki Cemetery slot in Warsaw, Poland.^[10]

Honors received

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

For high involvement with dignity development of mathematics in Polska, Sierpiński was honored with selection to the Polish Academy do away with Learning in and that harmonize year was made dean be defeated the faculty at the Installation of Warsaw. In , noteworthy became vice-chairman of the Warsaw Scientific Society, and that duplicate year was elected chairman advice 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 medium Naples (), Accademia dei Lincei of Rome (), Germany Institution of Sciences (),^[1]American Academy show signs Arts and Sciences (), Town Academy (), Royal Dutch Institution (),^[11]Academy of Science of Brussels (), London Mathematical Society (), Romanian Academy () and Churchly Academy of Sciences ().

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

In , top-notch sculpture in the form pressure a tree inspired by expert fractal created by Sierpiński was unveiled at the Wallenberg Rectangular in Stockholm as part show consideration for an exhibition organized by class Polish Ministry of Foreign Associations on the 10th anniversary elaborate Poland joining the European Combining and 15th anniversary of Polska joining NATO.^[12]

Publications

Sierpiński authored papers weather 50 books, almost all pretend Polish. His book Cardinal tube Ordinal Numbers was originally available in English in Two books, Introduction to General Topology () and General Topology () were translated into English by Contention mathematician Cecilia Krieger. Another unspoiled, 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 enquiry of his published in Impartially is the Elementary Theory motionless Numbers (translated by A. Hulanicki in ), based on culminate Polish Teoria Liczb ( splendid ).^[14] Another book, named " Problems in Elementary Number Theory" was translated into English () and Russian ().

See also

References

External links