Siegfried Heinrich Aronhold

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Siegfried Aronhold

Siegfried Heinrich Aronhold (born July 16, 1819 in Angerburg , † March 13, 1884 in Berlin ) was a German mathematician and physicist . He is considered to be the creator of the invariant theory in Germany.

biography

Aronhold was the son of the businessman Moses Süssel Aronhold and attended elementary school in Angerburg and the grammar school in Rastenburg until his father's death . After the widowed mother went to Königsberg with the children , he attended the old town high school there until 1841 . He then studied mathematics, astronomy and physics at the Albertus University in Königsberg with Friedrich Wilhelm Bessel , Friedrich Julius Richelot , Otto Hesse , Franz Ernst Neumann and Carl Gustav Jacob Jacobi . During this time Aronhold, as a member of the mathematics seminar at the university, received two awards for the best work, but in 1845 he finished his studies in Königsberg without a degree and followed Jacobi to Berlin, where he dealt with mathematical problems independently. Here Jacobi introduced him to Peter Gustav Lejeune Dirichlet , Jakob Steiner , Heinrich Gustav Magnus and Heinrich Wilhelm Dove , whose lectures he also attended. During this time he was already engaged in higher mathematics. However, he did not get a permanent job, but could only make a living from private lessons.

His treatise on the homogeneous third order functions of three variables in Volume 39 of August Crelle's Journal for Pure and Applied Mathematics from 1849 impressed the Philosophical Faculty of the Albertina in Königsberg, so that his follow-up work "On a New Algebraic Principle" was a dissertation was recognized by this and he was awarded the doctorate. Aronhold wrote further articles in the Crelles Journal and in the monthly reports of the Berlin Academy . In 1850 he became a member of the Physical Society in Berlin and published various specialist articles in their annual reports. From 1851 on he lectured extraordinarily at the Berlin Building Academy , completed his habilitation there in 1852 and was given the subject of integral calculus in 1859 . He also taught at the United Artillery and Engineering School from 1852 to 1854 . In 1860 he received a teaching position at the Berlin industrial institute and married Marie Julie Friederike Hayn, daughter of a medical councilor . His marriage resulted in two daughters and a son.

In 1862 he took over all mathematics lessons at the industrial institute and was given the title of professor in 1863, and the chair of pure mathematics at the beginning of the following year. Since the industrial institute did not have the right to award doctorates, Aronhold himself could not do his students doctorates. In 1869 he became a corresponding member of the Royal Society of Sciences in Göttingen and was awarded the Order of the Red Eagle, 4th class. After the building academy and the commercial institute were merged to form the Technical University of Berlin in 1879, Aronhold was Vice-Rector there until early July 1880 . He did not answer various calls from established universities outside Berlin. On the occasion of his retirement in 1883 he was again awarded the Order of the Red Eagle, this time 3rd class with ribbon.

Honors

literature

Web links

Individual evidence

  1. ↑ Prof. Dr. Rudolf Fritsch . Aronhold, Siegfried Heinrich, mathematician (PDF; 134 kB), Mathematical Faculty of LMU Munich.
  2. ^ Obituary , Im Centralblatt der Bauverwaltung , No. 11, March 15, 1884, p. 110, accessed on December 27, 2012
personal data
SURNAME Aronhold, Siegfried Heinrich
BRIEF DESCRIPTION German mathematician and physicist
DATE OF BIRTH July 16, 1819
PLACE OF BIRTH Angerburg
DATE OF DEATH March 13, 1884
Place of death Berlin