Carl Prediger (mathematician)

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Carl Prediger (born November 15, 1822 in Clausthal ; † March 19, 1895 ) was a German mathematician, geodesist and cartographer.

Life

Johann Carl Prediger - he called himself "Carl Prediger" in his publications - initially earned his living as a hammer worker and as a worker in various mines. From 1841 to 1844 he attended the mountain school , in 1847 he became a Markscheider and in 1853 he passed the second state examination for senior technical officers. As a geometer for the Harz Forest Administration, he measured the Hanoverian forest districts on the Harz from 1850 to 1855 and reported about it, for example. B. in the journal for natural sciences . From 1850 to 1864 his map of the northwestern Harz Mountains, which was judged to be a model work, was published in 1859 as a map of the entire Harz region.

Map of the northwestern Harz Mountains

From 1854 he was a lecturer, initially for plan drawing and descriptive geometry, and from 1863, after having carried out extensive mathematical studies, a permanent teacher at the Clausthal mining academy . According to J. Horn, he held the title of professor from 1870. In 1873 the first edition of his work, Analytical Geometry of the Plane , followed in 1878. Analytical Geometry of Space . In retirement, Prediger, who had also directed the Clausthal library, wanted to write another book. This should contain the Gaussian coordinates to geographic conversions for numerous trigonometric points.

In 1888 he was retired. Ms. Meyer published an article in memory of Professor J. Carl Prediger in the 1898 yearbook on the progress of mathematics .

Individual evidence

  1. ^ A b c J. Horn, History of the Bergakademie , in: The royal mining academy in Clausthal. Their history and their new buildings. Festschrift for the inauguration of the new buildings on May 14, 15 and 16, 1907 , pp. 1–68, here pp. 54 f. ( Digitized version )
  2. ↑ Carl Prediger, Geognostic Observations on the Southern Harze , in: Zeitschrift für Naturwissenschaften 3-4, 1854, pp. 364–377, online at ( limited preview in the Google book search)
  3. ↑ The DNB gives different data.
  4. ^ Winfried Scharlau: Mathematical Institutes in Germany 1800–1945. Springer-Verlag, 2013, ISBN 978-3-663-14036-8 , p. 73 ( limited preview in Google book search)
  5. ^ Prussian Academy of Sciences: Yearbook on the progress of mathematics . Georg Reimer, 1898, p. 38 ( limited preview in Google book search)
personal data
SURNAME Preacher, Carl
ALTERNATIVE NAMES Preacher, Karl; Preacher, J. Carl; Preacher, Johann Carl
BRIEF DESCRIPTION German mathematician, geodesist and cartographer
DATE OF BIRTH November 15, 1822
PLACE OF BIRTH Clausthal
DATE OF DEATH March 19, 1895