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- C._L._Lehmus abstract "Daniel Christian Ludolph Lehmus (July 3, 1780 in Soest – January 18, 1863 in Berlin) was a German mathematician, who is today best remembered for the Steiner–Lehmus theorem, that was named after him.Lehmus was the grandson of the German poet Johann Adam Lehmus (1707-1788). His father Christian Balthasar Lehmus was a science teacher and director of a gymnasium in Soest, as such he took it upon himself to school his son. From 1799 to 1802 Lehmus studied at universities of Erlangen and Jena. In 1803 he went to Berlin, where he was giving private lectures in mathematics and pursued further studies at the university, which awarded him a PhD in 1811. From December 18, 1813 to Easter 1815 Lehmus was employed as a lecturer (Privatdozent) by the university, but in 1814 he became a teacher for math and science at the Hauptbergwerks-Eleven-Institut (mining school) in Berlin as well. In 1826 he also assumed a teaching position at the Königlichen Artillerie- und Ingenieurschule (military engineering school) and was granted the title of a professor at that school in 1827. In 1836 he was awarded the Order of the Red Eagle (4th class). In addition to his two teaching positions Lehmus was giving lectures at the university until 1837 as well.Lehmus wrote a number of math and science textbooks, best known was probably his Lehrbuch der Geometrie, which saw several editions. He published articles in various math journals, in particular he was a regular contributor to Crelle's Journal and provided an article for its very first edition in 1826. He published an elegant trigonometric solution of Malfatti's problem in the French math journal Nouvelles Annales de Mathématiques, but due to a copy error the author's name was given as Lechmütz.In 1840 Lehmus wrote a letter to the French mathematician C. Sturm asking him for an elementary geometric proof of the theorem that is now named after him. Sturm passed the problem on to other mathematicians and Jakob Steiner was one of the first who provided a proof. In 1850 Lehmus came up with a different proof on his own. The theorem itself proved to be a rather popular topic in elementary geometry being a subject of somewhat regular publications for over 160 years.".
- C._L._Lehmus birthDate "1780-07-07".
- C._L._Lehmus birthYear "1780".
- C._L._Lehmus deathDate "1863-01-18".
- C._L._Lehmus deathYear "1863".
- C._L._Lehmus wikiPageExternalLink 0212.html.
- C._L._Lehmus wikiPageExternalLink Dozenten.
- C._L._Lehmus wikiPageID "14446011".
- C._L._Lehmus wikiPageLength "5345".
- C._L._Lehmus wikiPageOutDegree "20".
- C._L._Lehmus wikiPageRevisionID "659830271".
- C._L._Lehmus wikiPageWikiLink Berlin.
- C._L._Lehmus wikiPageWikiLink Category:1780_births.
- C._L._Lehmus wikiPageWikiLink Category:1863_deaths.
- C._L._Lehmus wikiPageWikiLink Category:19th-century_German_mathematicians.
- C._L._Lehmus wikiPageWikiLink Crelles_Journal.
- C._L._Lehmus wikiPageWikiLink Doctor_of_Philosophy.
- C._L._Lehmus wikiPageWikiLink Erlangen.
- C._L._Lehmus wikiPageWikiLink Germans.
- C._L._Lehmus wikiPageWikiLink Gymnasium_(school).
- C._L._Lehmus wikiPageWikiLink Jacques_Charles_François_Sturm.
- C._L._Lehmus wikiPageWikiLink Jakob_Steiner.
- C._L._Lehmus wikiPageWikiLink Jena.
- C._L._Lehmus wikiPageWikiLink Johann_Adam_Lehmus.
- C._L._Lehmus wikiPageWikiLink List_of_schools_of_mines.
- C._L._Lehmus wikiPageWikiLink Malfatti_circles.
- C._L._Lehmus wikiPageWikiLink Mathematician.
- C._L._Lehmus wikiPageWikiLink Order_of_the_Red_Eagle.
- C._L._Lehmus wikiPageWikiLink Privatdozent.
- C._L._Lehmus wikiPageWikiLink Soest,_Germany.
- C._L._Lehmus wikiPageWikiLink Steiner–Lehmus_theorem.
- C._L._Lehmus wikiPageWikiLinkText "C. L. Lehmus".
- C._L._Lehmus wikiPageWikiLinkText "Lehmus, C. L.".
- C._L._Lehmus dateOfBirth "1780-07-07".
- C._L._Lehmus dateOfDeath "1863-01-18".
- C._L._Lehmus name "Lehmus, C. L.".
- C._L._Lehmus shortDescription "German mathematician".
- C._L._Lehmus wikiPageUsesTemplate Template:Authority_control.
- C._L._Lehmus wikiPageUsesTemplate Template:Google_books.
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- C._L._Lehmus description "German mathematician".
- C._L._Lehmus description "German mathematician".
- C._L._Lehmus subject Category:1780_births.
- C._L._Lehmus subject Category:1863_deaths.
- C._L._Lehmus subject Category:19th-century_German_mathematicians.
- C._L._Lehmus hypernym Mathematician.
- C._L._Lehmus type Agent.
- C._L._Lehmus type Person.
- C._L._Lehmus type Scientist.
- C._L._Lehmus type Person.
- C._L._Lehmus type Mathematician.
- C._L._Lehmus type Scientist.
- C._L._Lehmus type Agent.
- C._L._Lehmus type NaturalPerson.
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- C._L._Lehmus type Q215627.
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- C._L._Lehmus type Person.
- C._L._Lehmus comment "Daniel Christian Ludolph Lehmus (July 3, 1780 in Soest – January 18, 1863 in Berlin) was a German mathematician, who is today best remembered for the Steiner–Lehmus theorem, that was named after him.Lehmus was the grandson of the German poet Johann Adam Lehmus (1707-1788). His father Christian Balthasar Lehmus was a science teacher and director of a gymnasium in Soest, as such he took it upon himself to school his son. From 1799 to 1802 Lehmus studied at universities of Erlangen and Jena.".
- C._L._Lehmus label "C. L. Lehmus".
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- C._L._Lehmus givenName "C. L.".
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- C._L._Lehmus name "C. L. Lehmus".
- C._L._Lehmus name "Lehmus, C. L.".
- C._L._Lehmus surname "Lehmus".