year was elected chairman of the Polish Mathematical Society. He was elected to the Geographic Society of Lima (1931), the Royal Scientific Society of Liège (1934), the Bulgarian Academy of Sciences (1936), the National Academy of Lima (1939), the Royal Society of Sciences of Naples (1939), the Accademia dei Lincei of Rome (1947), the Germany Academy of Sciences (1950), the American Academy of Arts and Sciences (1959), the Paris Academy (1960), the Royal Dutch Academy (1961), the Academy of Science of Brussels (1961), the London Mathematical Society (1964), the Romanian Academy (1965) and the Papal Academy of Sciences (1967). In 1949 Sierpiński was awarded Poland's Scientific Prize, first degree. Publications Sierpiński authored 724 papers and 50 books, almost all in Polish. His book Cardinal and Ordinal Numbers was originally published in English in 1958. Two books, Introduction to General Topology (1934) and General Topology (1952) were translated into English by Canadian mathematician Cecilia Krieger. Another book, Pythagorean Triangles (1954), was translated into English by Indian mathematician Ambikeshwar Sharma, published in 1962, and republished by Dover Books in 2003; it also has a Russian translation. Another work of his published in English is the Elementary Theory of Numbers (translated by A. Hulanicki in 1964), based on his Polish Teoria Liczb (1914 and 1959). Another book, named "250 Problems in Elementary Number Theory" was translated into English (1970) and Russian (1968). See also Arity theorem List of Poles Menger sponge Seventeen or Bust Sierpiński carpet Sierpiński's constant Sierpiński curve Sierpiński game Sierpiński number Sierpiński set Sierpiński space Sierpiński triangle The Sierpiński moon crater References External links Several of Sierpiński's books, Biblioteka Wirtualna Nauki. Sierpiński: Fractals, Code Breaking, and a Crater on the Moon 1882 births 1969 deaths Warsaw School of Mathematics People from Warsaw Governorate Number theorists Topologists Members of the Polish Academy of Learning Burials at Powązki Cemetery Cipher Bureau (Poland) Jagiellonian University alumni University of Warsaw alumni Academic staff of the University of Warsaw Members of the Polish Academy of Sciences Members of the Bulgarian Academy of Sciences Members of the French Academy of Sciences Members of the Royal Netherlands Academy of Arts and Sciences Members of the German Academy of Sciences at Berlin Recipients of the State Award Badge (Poland) Foreign members of the Serbian Academy of Sciences and Arts