Julius Worpitzky

Julius Daniel Theodor Worpitzky (born May 10, 1835 in Karlsburg near Greifswald , † March 4, 1895 in Berlin ) was a German mathematician . He mainly dealt with continued fractions , Bernoullian and Eulerian numbers , Euler numbers and the evaluation of certain integrals .

Life

Worpitzky obtained his school leaving certificate in 1855 at the grammar school in Anklam . He then studied five semesters at the University of Greifswald with Johann August Grunert and in the winter semester of 1857/58 in Berlin.

He then worked as a private teacher, including from 1860 to 1862 in Livonia . After his return to Prussia and passed the exam pro facultate docendi , he entered the mathematical-pedagogical seminar of Karl Heinrich Schellbach in Berlin in 1862/63, where he participated in Schellbach's theory of elliptical integrals and theta functions . According to the foreword, he demonstrated that the roots of a polynomial occurring during the investigation are real.

In 1864 he became a full teacher at the Friedrichs-Gymnasium Berlin , which at the time was united with the Friedrichs-Realgymnasium under the direction of Adolf Ferdinand Krech . Three years later he received his doctorate in Jena with a treatise on the finiteness of definite integrals and series sums . In the following year he succeeded Heinrich Bertram as the first mathematician at the Friedrichs-Werderschen Gymnasium .

In the autumn of 1872 he was also given a teaching position for mathematics at the Royal Prussian War Academy , and for some time he also worked for the ministry. In Berlin he was a member of the Freemason Lodge Friedrich Wilhelm for Crowned Justice .

From 1892 his health was impaired. He had requested and received his retirement on April 1, 1895. Julius Moser created his tomb in Cemetery I of the Jerusalem and New Church Congregation , an aedicule made of red granite with a relief made of white marble .

His scientific treatises belong mainly to function theory, where he was in competition with Charles Briot and Jean-Claude Bouquet .

Fonts

Contribution to the integration of the Riccat equation , CA Koch's Verlag-Buchhandlung Th. Kunike, Greifswald 1862
Investigations into the development of monodromic and monogenic functions through continued fractions , annual report Friedrichs-Gymnasium and Realschule, Gustav Lange, Berlin 1865
About the finiteness of definite integrals and series sums , W. Ratz, Jena 1867 (inaugural dissertation)
Elements of mathematics for learned schools and for self-study , Weidmannsche Buchhandlung, Berlin 1872 (booklet 1) 1874 (booklets 2 to 4) 1883 (booklet 5)
Textbook on differential and integral calculation , Weidmannsche Buchhandlung, Berlin 1880 (in the Internet archive: [3] )
Number, size, measure , in: Festschrift for the second secular celebration of the Friedrichs-Werderschen Gymnasium in Berlin , Weidmannsche Buchhandlung, Berlin 1881, pp. 335–348 (in the Internet archive: [4] )
Studies on Bernoulli's and Euler's Numbers , Crelles Journal 94, 1883, pp. 203-232

literature

Lisa Jacobsen, Wolfgang J. Thron, Haakon Waadeland: Julius Worpitzky, his contributions to the analytic theory of continued fractions and his times . In Lisa Jacobsen (ed.): Analytic Theory of Continued Fractions III , Springer, Berlin 1989, ISBN 3-540-51830-4 , pp. 25-47
Emil Lampe : Obituary for Professor Dr. Julius Worpitzky , Annual Report of DMV 4, 1894/95, pp. 47–51

Individual evidence

^ Karl Heinrich Schellbach : The theory of the elliptical integrals and the theta functions , Georg Reimer, Berlin 1864
↑ see Cemetery I of the Jerusalem and New Church Congregation at the Foundation for Historic Cemeteries and Cemeteries in Berlin-Brandenburg; Photos: [1] , [2]

personal data
SURNAME	Worpitzky, Julius
ALTERNATIVE NAMES	Worpitzky, Julius Daniel Theodor (full name)
BRIEF DESCRIPTION	German mathematician
DATE OF BIRTH	May 10, 1835
PLACE OF BIRTH	Karlsburg (Western Pomerania) near Greifswald
DATE OF DEATH	March 4, 1895
Place of death	Berlin

[1] Karl Heinrich Schellbach : The theory of the elliptical integrals and the theta functions , Georg Reimer, Berlin 1864

[2] see Cemetery I of the Jerusalem and New Church Congregation at the Foundation for Historic Cemeteries and Cemeteries in Berlin-Brandenburg; Photos: [1] , [2]