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MOBIUS, AUGUST FERDINAND (1790-1868)

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Originally appearing in Volume V18, Page 637 of the 1911 Encyclopedia Britannica.
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MOBIUS, See also:AUGUST See also:FERDINAND (1790-1868) , See also:German astronomer and mathematician, was See also:born at Schulpforta on the 17th of See also:November 1790. At See also:Leipzig, See also:Gottingen and See also:Halle he studied for four years, ultimately devoting himself to See also:mathematics and See also:astronomy. In 1815 he settled at Leipzig as privatdocent, and the next See also:year became extraordinary See also:professor of astronomy in connexion with the university. Later he was chosen director of the university See also:observatory, which was erected (1818–1821) under his superintendence. In 1844 he was elected See also:ordinary professor of higher See also:mechanics and astronomy, a position which he held till his See also:death on the 26th of See also:September 1868. His See also:doctor's dissertation, De computandis occultationibus fixarum per See also:planet as (Leipzig, 1815), established his reputation as a theoretical astronomer. See also:Die Hauptsatze der Astronomie (1836), Die Elemente der Mechanik See also:des Himmels (1843), may be noted amongst his other purely astronomical publications. Of more See also:general See also:interest, however, are his labours in pure mathematics, which appear for the most See also:part in Crelle's See also:Journal from 1828 to 1858. These papers are chiefly geometrical, many of them being developments and applications of the methods laid down in his See also:great See also:work, Der barycentrische Calcul (Leipzig, 1827), which, as the name implies, is based upon the properties of the mean point or centre of See also:mass (see See also:ALGEBRA: Universal). This work abounds in suggestions and foreshadowings of some of the most striking discoveries in more See also:recent times—such, for example, as are contained in H. Grassmann's Ausdehnungslehre and See also:Sir W. R.

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Hamilton's See also:Quaternions. MSbius must be regarded as one of the leaders in the introduction of the powerful methods of See also:modern projective See also:geometry. His Gesammelten Werke have been published in four volumes at Leipzig (1885-1887).

End of Article: MOBIUS, AUGUST FERDINAND (1790-1868)

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