Mathematician:Thomas Joannes Stieltjes

Thomas Joannes Stieltjes (whose name is also rendered Thomas Jan Stieltjes) was a Dutch mathematician whose main fields of study included continued fractions and measure theory.

Nationality
Dutch

History

 * Born: 29 Dec 1856, Zwolle, Overijssel, The Netherlands
 * 1873: Started studies at Polytechnical School of Delft
 * 1875-76: Failed examinations
 * April 1877: Became assistant astronomer at Leiden Observatory, via his influential father
 * 23 June 1878: Father died in Rotterdam
 * 8 November 1882: Began a correspondence with Charles Hermite
 * 1 January 1883: Allowed by Van de Sande-Bakhuyzen, the director of Leiden Observatory, to work more on mathematical topics
 * May 1883: Married Elizabeth Intveld (who encouraged him to give up astronomy for mathematics)
 * September 1883: Asked to substitute at the University of Delft for F J van den Berg, who was ill
 * 1 December 1883: Resigned from observatory, joined staff of University of Delft full-time
 * 1883-84: Failed to gain a position at Groningen because of his lack of a degree
 * 1884: Failed, because of a missed communication, to gain a position at Leiden
 * April 1885: Went with his family to Paris
 * 1885: Elected to the Royal Academy of Sciences in Amsterdam
 * 1886: Received doctorate of science for a thesis on asymptotic series
 * 1886: Appointed to the University of Toulouse
 * 1889: Appointed to a chair of differential and integral calculus in Toulouse
 * Died: 31 Dec 1894 in Toulouse, France

Theorems and Definitions

 * Stieltjes Function
 * Lebesgue-Stieltjes Integral (with Henri Lebesgue)
 * Laplace-Stieltjes Transform (with Pierre-Simon de Laplace)
 * Riemann-Stieltjes Integral (with Bernhard Riemann)
 * Stieltjes Moment Problem
 * Chebyshev-Markov-Stieltjes Inequalities (with Pafnuty Chebyshev and Andrey Andreyevich Markov)
 * Fourier-Stieltjes Coefficients (with Joseph Fourier)

Books and Papers

 * 18 June 1894: Recherches sur les fractions continues