Olaus Henrici
Olaus Magnus Friedrich Erdmann Henrici (born March 9, 1840 in Meldorf , † August 10, 1918 in Chandler's Ford , Hampshire , England ) was a German mathematician.
Life
Henrici went to study at the Polytechnic School in Karlsruhe in 1859 , where he was particularly influenced by Clebsch . On his advice and recommendation, he went to Heidelberg University in 1862 to study with Hesse . There he was awarded a doctorate on June 6, 1863 with a paper that was later published in Crelles Journal . phil. PhD. After further studies in Berlin with Weierstrass and Kronecker , he became a private lecturer in mathematics and physics at the University of Kiel in 1865 . Due to insufficient financial means, he soon gave up this position and went to London , where he earned a living for a few years by taking private lessons. In 1869 he was first assistant, then on June 4, 1870 professor of mathematics at University College London (UCL). In March 1884 he became professor of mechanics and mathematics at the City and Guilds College (also Central Technical College) in London. There he set up a mechanical laboratory in which mathematical models and equipment were built. The best known of these is probably a harmonic analyzer, a device with which the Fourier coefficients of a periodic function can be determined.
In 1874 Henrici became a Fellow of the Royal Society , and in 1882/83 he was a member of its Council. From 1882 to 1884 he was President of the London Mathematical Society . The University of St Andrews awarded him an honorary doctorate in 1884.
Henrici married the sister of a colleague in 1877. The marriage resulted in a son who became an officer in the engineering corps of the English army. Henrici wrote a joint paper with his son.
Works
- Olaus Henrici: Skeleton structures: especially in their application to the building of steel and iron bridges . New York: Van Nostrand, 1867.
- Olaus Henrici: Elementary geometry: congruent figures . London: Longmans, Green, 1879.
- Olaus Henrici: Elementary geometry: congruent figures . London: Longmans, Green, second edition 1888.
- Olaus Henrici and George Charles Turner: Vectors and rotors: with applications , London: Arnold 1903.
Web links
- John J. O'Connor, Edmund F. Robertson : Olaus Henrici. In: MacTutor History of Mathematics archive .
- F. Lindemann : Olaus Henrici (obituary) , Annual Report of the German Mathematicians Association, Volume 36, pp. 157–162, 1927.
- Henrici harmonic analyzer in the Göttingen collection of mathematical models
- Henrici's harmonic analyzer in the Science Museum London
literature
- MJM Hill, Professor Olaus Henrici , Proceedings of the London Mathematical Society (2), Volume 17, pp. Xlii-xlix, 1918. doi : 10.1112 / plms / s2-17.1.1-u
Individual evidence
- ↑ O. Henrici, Transformation of differential expressions of the first order of the second degree with the aid of the generalized elliptical coordinates , Journal for pure and applied mathematics, Volume 65, pp. 1-25, 1866.
- ↑ O. Henrici, About a new harmonic analyzer , News from the Society of Sciences in Göttingen, Mathematical-Physical Class, from the year 1894, pp. 30-32, Göttingen, 1895.
- ^ O. Henrici, On a new harmonic analyzer , Philosophical Magazine, Volume 38, pp. 110-121, July 1894; digitized version of the Jena University Library ; The following two articles by Sharp and Perry also concern the harmonic analyzer.
- ^ O. Henrici and EO Henrici, On the theory of measurement by metal tapes and wires in catenary , Ordnance Survey, 1912.
| personal data | |
|---|---|
| SURNAME | Henrici, Olaus |
| ALTERNATIVE NAMES | Henrici, Olaus Magnus Friedrich Erdmann (full name) |
| BRIEF DESCRIPTION | German mathematician |
| DATE OF BIRTH | March 9, 1840 |
| PLACE OF BIRTH | Meldorf |
| DATE OF DEATH | August 10, 1918 |
| Place of death | Chandler's Ford , Hampshire , England |