Eksempler på brug af Padé på Engelsk og deres oversættelser til Dansk
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The contribution by Padé contains two sealed covers.
Padé goes further, and arranges the approximants, expressed each in its lowest terms, into a table.
It would be fair to say that this work is the first systematic study of Padé approximants.
The approximants which Padé introduced in this paper are now known as the Padé-Hermite approximants.
Between these two contributions by Frobenius,Darboux had looked at Padé approximants of the exponential function.
The work of Padé consists of a presentation of his previous results concerning the Padé table.
He proved results on their general structure andalso clearly set out the connection between Padé approximants and continued fractions.
This too was a high distinction for Padé who became the youngest Rector in France when he was appointed.
Padé defended his thesis on 21 June 1892, the examiners being his supervisor Hermite, together with Emile Picard and Paul Appell.
After completing his doctoral studies, Padé taught at the Lycée Faidherbe in Lille, taking up this post in October 1893.
Padé had made other significant contributions, however, such as publishing an elementary algebra book and translating Klein 's Erlangen programme from German into French.
Emile Picard read two of the submissions,including the one by Padé, while these other referees read one each of the remaining three entries.
By 1908 Padé had written 41 papers, 29 of which were on continued fractions and Padé approximants.
In January 1897,a little over three years after taking up his appointment at the Lycée Faidherbe, Padé became Maître de Conférences at the University of Lille.
Henri Padé was born in Abbeville which is a town northwest of Amiens in the Picardy region of northern France.
Having achieved high standing at the University of Bordeaux, Padé left universities in 1908, when he was 44 years old, to became Rector of the Academy in Besançon.
In 1889 Padé went to Germany to continue his studies, going first to Leipzig and then to Göttingen, studying under Klein and Schwarz.
The first who seemed to realise the full significance of the method of Padé approximants was Lagrange in a paper of 1776 where he related them to continued fractions.
In 1899 Padé published another major work on Padé approximants which, as we noted above, looked in depth at approximants of the exponential function.
The method continued to be used from time to time by various mathematicians,for example Kummer in 1837 used Padé approximants to sum series which only converged very slowly.
Wikipedia Henri Padé was born in Abbeville which is a town northwest of Amiens in the Picardy region of northern France.
Five submissions were received and four referees were appointed, Emile Picard, Painlevé, Poincaré, and Appell. Emile Picard read two of the submissions,including the one by Padé, while these other referees read one each of the remaining three entries. Brezinski writes.
After completing his studies at Lycée St Louis, Padé sat the entrance examination for the École Normale Supérieure in Paris, entering the École in 1883.
Padé established various properties of this table in his thesis and developed the ideas further in later papers, particularly in 1899 when he studies the exponential series and in 1901 when he considered(1+x)m, for m not an integer.
In 1892 he presented his doctoral thesis Sur la representation approchee d'une fonction par des fractions rationelles to the Sorbonne in Paris. Padé defended his thesis on 21 June 1892, the examiners being his supervisor Hermite, together with Emile Picard and Paul Appell.
In his doctoral thesis Padé showed that, in a properly defined sense, the Padé approximant was the best approximant among all the rational ones.
Van Vleck, at a meeting of the American Mathematical Society in Boston in 1903 said(see for example):The existence of approximants was, of course, well-known before Padé, but no systematic examination of them had been made except by Frobenius, who determined the important relations which normally exist between them.
In his thesis Padé made the first systematic study of what we call today Padé approximants, which are rational approximations to functions given by their power series.
He studied the relative location of the zeros of pairs of rational functions, zeros and topology of extremal polynomials, the critical points and level lines of Green 's functions and other harmonic functions,conformal mappings, Padé approximation, and the interpolation and approximation of continuous, analytic or harmonic functions.
Three of the five submissions received a prize, with Padé receiving the first prize together with half the total prize money, with smaller amounts going to the submissions judged to be worthy of second and third place.