Ernst Lebrecht Henneberg (27 September 1850 – 29 April 1933) was a German professor of mechanics and

mathematics Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented in modern mathematics ...

Life

Ernst Lebrecht Henneberg was born in

Wolfenbüttel Wolfenbüttel (; nds, Wulfenbüddel) is a town in Lower Saxony, Germany, the administrative capital of Wolfenbüttel District. It is best known as the location of the internationally renowned Herzog August Library and for having the largest c ...

in 1850 to Heinrich Henneberg and Sophie Rimpau. From 1870 until 1876 he studied mathematics in

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Heidelberg Heidelberg (; Palatine German language, Palatine German: ''Heidlberg'') is a city in the States of Germany, German state of Baden-Württemberg, situated on the river Neckar in south-west Germany. As of the 2016 census, its population was 159,914 ...

, and

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, receiving his doctorate in 1875 from

Hermann Schwarz Karl Hermann Amandus Schwarz (; 25 January 1843 – 30 November 1921) was a German mathematician, known for his work in complex analysis. Life Schwarz was born in Hermsdorf, Silesia (now Jerzmanowa, Poland). In 1868 he married Marie Kummer, ...

while in Zürich. After living in Zürich from 1876 until 1878, he became an associate professor for

descriptive In the study of language, description or descriptive linguistics is the work of objectively analyzing and describing how language is actually used (or how it was used in the past) by a speech community. François & Ponsonnet (2013). All acad ...

and

synthetic geometry Synthetic geometry (sometimes referred to as axiomatic geometry or even pure geometry) is the study of geometry without the use of coordinates or formulae. It relies on the axiomatic method and the tools directly related to them, that is, compa ...

and

graphic statics In a broad sense, the term graphic statics is used to describe the technique of solving particular practical problems of statics using graphical means. Actively used in the architecture of the 19th century, the methods of graphic statics were largel ...

at TU Darmstat. Not soon after in 1879, he became a professor of mechanics at the university. From 1887 to 1890 Henneberg was the dean of the

Electrical Engineering Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems which use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the l ...

school at TU Darmstat. In 1888, Henneburg was elected as a member of the

Leopoldina Leopoldina may refer to: * Colônia Leopoldina, a Brazilian municipality in the state of Alagoa * Leopoldina, Minas Gerais, a Brazilian municipality in the state of Minas Gerais * Maria Leopoldina of Austria (1797-1826), consort of emperor Pedro I ...

. By 1890, he was one of the founders of the German Association of Mathematicians. From 1890 to 1891 Henneberg had become the dean of the Mathematics and Sciences school, while also acting as the

rector Rector (Latin for the member of a vessel's crew who steers) may refer to: Style or title *Rector (ecclesiastical), a cleric who functions as an administrative leader in some Christian denominations *Rector (academia), a senior official in an edu ...

from 1891 to 1893. In 1903 he went on to write an article on graph theory in the Encyclopedia of Mathematical Sciences. The Henneberg's method of bar conversion and the Henneberg minimum surface that he found in his dissertation are named after him. During both 1902-1905 and 1911-14 he was Dean of the General Department, and on September 30, 1920, he retired from this position. In 1933, Ernst died a professor in the department of Mechanics at TU Darmstadt.

Honors

1892 November 25: Award of the Knight's Cross 1st Class of the Order of Merit of Philip the Magnanimous 1898 November 25: Appointment as Privy Councilor 1904 November 25 Award of the Cross of Honor of the Order of Merit of Philip the Magnanimous 1911: PhD of engineering at the Technical University of Braunschweig. 1917 March 13: Awarded the Commander's Cross II. Class of the Order of Merit of Philip the Magnanimous 1925: Honorary Senator at TH Darmstadt.

Literature

Christa Wolf/Marianne Viefhaus: List of university teachers at the TH Darmstadt, Darmstadt 1977, p. 81. Karl-Eugen Kurrer: History of structural engineering. In search of balance. Ernst & Sohn, Berlin 2016, pp. 644 and pp. 651–652, .

References

{{DEFAULTSORT:Henneberg, Ernst Lebrecht 1850 births 1933 deaths 19th-century German mathematicians 20th-century German mathematicians People from Wolfenbüttel