Ludwig Immanuel Magnus
Ludwig Immanuel Magnus (born March 15, 1790 in Berlin ; † September 25, 1861 there ) was a German mathematician .
Life
Magnus lost his father at an early age. He was the cousin of Heinrich Gustav Magnus . His training was designed to work as a businessman . Therefore he attended the commercial school in Berlin before he found a job in his uncle's banking business. Despite the heavy demands of work, he dealt with Euclid . In 1813, during the Wars of Liberation , he volunteered in the military in Breslau and was quickly promoted to fireworks. After 1815 he was employed again in a Berlin bank, but at the same time was able to continue his mathematical studies, among other things under the guidance of Samuel Ferdinand Lubbe .
Magnus also became active as a teacher of mathematics in 1816. First as a sideline, then from 1826 as a full member of the teaching staff, he taught at Ludwig Cauer's college in Berlin and Charlottenburg until 1834 . Based on his work published in 1833, he was awarded an honorary doctorate by the University of Bonn .
After Cauer's death in 1834, Magnus did not find another teaching job, but returned to the banking industry. He became the chief treasurer at the newly founded Berlin treasury . During this time he largely stopped his scientific work. In 1843 he went into retirement.
He is said to have been one of the first to use the identity symbol ≡.
Works (selection)
Magnus published mainly in journals, so in the Annales de mathématiques pures et appliquées by Joseph Diaz Gergonne , in volumes 11 and 16 (1820 and 1825) and in Crelle's Journal , volumes 5, 7, 8 and 9 (1830-1832).
- Collection of exercises and theorems from analytical geometry , Duncker and Humblot, Berlin 1833 (as the third part of the Meier Hirsch collection ).
- Collection of exercises and theorems from the analytical geometry of space , Duncker and Humblot, Berlin 1837.
literature
- Moritz Cantor : Magnus, Ludwig Immanuel . In: Allgemeine Deutsche Biographie (ADB). Volume 20, Duncker & Humblot, Leipzig 1884, p. 91 f.
- Newell Dunbar: Magnus, Ludwig Immanuel . In: Isidore Singer : The Jewish Encyclopedia , 1901–1906.
Web links
| personal data | |
|---|---|
| SURNAME | Magnus, Ludwig Immanuel |
| BRIEF DESCRIPTION | German mathematician |
| DATE OF BIRTH | March 15, 1790 |
| PLACE OF BIRTH | Berlin |
| DATE OF DEATH | September 25, 1861 |
| Place of death | Berlin |