Carl Gustav Axel Harnack

Mathematician, Deceased Person

1851 – 1888

99

Who was Carl Gustav Axel Harnack?

Carl Gustav Axel von Harnack was a German mathematician who contributed to potential theory. Harnack's inequality applied to harmonic functions. He also worked on the real algebraic geometry of plane curves, proving Harnack's curve theorem for real plane algebraic curves.

He was the son of the theologian Theodosius Harnack and the twin brother of theologian Adolf von Harnack - all of them from Tartu, which in that time was known as Dorpat, in what is today Estonia. His father was a professor at the university of Tartu, and he studied also himself in the university. After his studies in Tartu, he moved to Erlangen to become a student of Felix Klein. He published his PhD thesis in 1875, and received the right to teach at the university of Leibzig the same year. One year later he accepted a position at Technical University Darmstadt. In 1877 he married Elisabeth von Öttingen, and they moved to Dresden, where he acquired professorship in the Polytechnikum, which becomes a technical university in 1890. Harnack suffered from health problems from 1882 onwards, forcing him to spend long times in a sanatorium.

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Born
May 7, 1851
Also known as
  • Axel Harnack
Parents
Siblings
Nationality
  • Germany
Profession
Died
Apr 3, 1888
Dresden

Submitted
on July 23, 2013

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