Ernst Weinnoldt

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Ernst Weinnoldt (full name Ernst Heinrich Friedrich Weinnoldt * 28. October 1863 in Kiel , † 1944 ) was a German educator , trade school -Director, mathematicians , university professors and textbook - author .

Life

From 1880 to 1885 Ernst Weinnold studied in Berlin and in Kiel at the university there , where he wrote his inaugural dissertation, published by Lipsius & Tischer in 1885, entitled On functions that satisfy certain differential equations of the order . In 1901 he completed his habilitation in Kiel on the construction of isophengenes on second order surfaces (isophengene are lines of equal brightness on illuminated curved surfaces). From 1888 to 1890 he was an assistant teacher at the Realgymnasium in Berlin and assistant at the Institute for Theoretical Physics in Berlin.

In 1890 he became a teacher at the building trade school in Magdeburg. From 1892 Ernst Weinnold worked as a professor at the Imperial Navy Academy and School in Kiel , where he published a guide to analytical geometry on behalf of the Imperial Navy . He was also a private lecturer at Kiel University.

In 1910 he took over as “Prof. Dr. "was the title of Weinnoldt in Hanover as the successor to the school director Philipp Frucht, who was in charge of the city's" Higher Commercial School "in Escherstrasse. In contrast to his otherwise purely mathematical publications, Weinnold wrote his anniversary report, published by Friedrich Culemann , of the Municipal Higher Commercial School in Hanover for the period from 1837 to 1912 .

Unlike his predecessors, Weinnoldt was unable to exert any extensive influence on the organization of the school, as it was already guided by the legal guidelines of the Prussian Ministry of Commerce and Industry at the beginning of the 20th century. After the First World War and the German hyperinflation at the beginning of the Weimar Republic , the school became the property of the city of Hanover in 1920 in order to avoid closure due to impending insolvency. Under the municipal administration, the number of students rose from around 1,600 in 1920 to more than 4,000 in 1929, so that there was a considerable need for space. So - still under Weinnoldt - the narrowness should be removed by expanding the attic of the school building in Escherstrasse and building a school pavilion on Andertenschen Wiese. However, on September 30, 1929 Weinnoldt retired; his successor was “Dr. Seibert ”.

According to the address book of the city of Hanover from 1943, "Weinnold, E., Dr., Profess." Lived in the then Braunauer Strasse 18 , the original Brandestrasse, which was renamed in 1938.

Fonts (selection)

  • About the construction of isophengenes on surfaces of the 2nd order , University publication , Leipzig, Teubner printing works, 1901; Digitized version of the University Library Kiel
  • Guide to analytical geometry , Leipzig [u. a.]: Teubner, 1902
  • Guide to analytical geometry. At the instigation of the imperial inspection of the naval education system, edited by Dr. Ernst Weinnoldt, professor at the Imperial Naval Academy and School in Kiel. (VI and 78 pp.) With 62 figures in the text. Leipzig and Berlin, BG Teubner, 1902. Price M. 1.60 / by Franz Dintzl , in: Monatshefte für Mathematik , Vol. 14, from December 1, 1903, No. 1; doi: 10.1007 / BF01706993
  • Anniversary report of the Municipal Higher Commercial School in Hanover from 1837–1912 , Hanover: Friedrich Culemann, 1912
  • The entire commercial arithmetic (= Hamburger Kaufmannsbücher , Vol. 8), 2nd completely revised and expanded edition, Hamburg: Hanseatische Verlagsanstalt,
    • Volume 1, main work , 1929
    • Volume 2: Keys , 1930
  • Ernst Weinnoldt, Karl Zeiger: The entire commercial computing , Hamburg: Hanseatische Verlags Anstalt, 6 volumes, including:
    • Part 3: Securities billing, Lombard billing, coin billing, foreign currency billing, arbitrage billing, costing of goods , 4th revised edition, 1940

Remarks

  1. ^ In (Hans-Joachim Wittenberg: From the rise to the "Städtische Höheren Handelsschule" up to the First World War , in: 150 years of commercial vocational schools in Hanover, 1837 - 1987 , publisher: Berufsbildendeschulen 11, 12, 13 and 14 der Landeshauptstadt Hannover, [Hanover]: [Vocational schools 11, 12, 13 and 14], 1987, p. 52ff .; here: p. 53) is wrongly stated as 1869 as the year of birth.

Individual evidence

  1. ↑ a b Michael Toepell, Directory of Members of the German Mathematicians Association 1890-1990, Munich 1991, p. 409 (entry Weinnoldt)
  2. ↑ a b Information and cross-references in the catalog of the German National Library
  3. ↑ Proof and link to digitized material via the catalog of the Bavarian Library Network Gateway Bavaria
  4. ↑ Proof
  5. ↑ Proof
  6. ↑ Hans-Joachim Wittenberg: From the rise to the “Städtische Höheren Handelsschule” up to the First World War , in: 150 years of commercial vocational schools in Hanover, 1837 - 1987 , publisher: Berufsbildendeschulen 11, 12, 13 and 14 der Landeshauptstadt Hannover, [Hannover ]: [Vocational schools 11, 12, 13 and 14], 1987, p. 52ff .; here: p. 53
  7. ↑ Information about the common union catalog
  8. ↑ Hans-Jürgen Tebbe: From the beginning of the 1st to the end of the 2nd World War (1914–1945) , in: 150 years of commercial vocational schools in Hanover ... , pp. 54–60; here: p. 55
  9. ↑ Address book of the city of Hanover for 1943, Part I: Heads of Households registered companies and businesses by name , p. 590; Digitized version of the Gottfried Wilhelm Leibniz Library - Lower Saxony State Library via the German Research Foundation
  10. ↑ Klaus Mlynek : 1938 , in: Hannover Chronik , pp. 179-182; here: p. 179; limited preview in Google Book search
personal data
SURNAME Weinnoldt, Ernst
BRIEF DESCRIPTION German mathematician, university professor, educator, commercial school director and textbook author
DATE OF BIRTH October 28, 1863
PLACE OF BIRTH Kiel
DATE OF DEATH 1944