Karl Leonhard Gottlieb Ehler

Karl Leonhard Gottlieb Ehler , also Carl , (born September 8, 1685 in Danzig ; † November 22, 1753 ibid) was a German politician and astronomer . From 1740 to 1753 he was mayor of Gdansk.

Life

Ehler was born in 1685 as the son of Danzig councilor Carl Ehler and his wife Konstantina. His grandfather was the mayor of Danzig Friedrich Ehler. From 1700 he attended the Academic Gymnasium Danzig . In 1705 he began studying in Königsberg , which he continued in 1706 in Frankfurt (Oder) and in 1707 in Leiden . From 1711 he worked as city council secretary. In 1713 he married Anna Florentina Franckenberger. In 1722 he worked as a lay judge at the court. He began his political career in 1727 as a councilor . He also worked as a judge from 1730. During the siege of Danzig in 1734 he took position for August II . From 1740 to 1753 he was mayor of Gdansk.

Ehler worked for a while as an astronomer in Berlin, where he met Gottfried Wilhelm Leibniz . In addition to Leibniz, Ehler also corresponded with the mathematicians Johann Christoph Gottsched and Leonhard Euler .

The correspondence with Euler is particularly important, since Ehler refers in this Euler to the Königsberg bridge problem, the solution of which by Euler would later be regarded as one of the first works in the field of graph theory .

Individual evidence

↑ ^a ^b ^c ^d ^e EHLER CARL GOTTLIEB - Encyklopedia Gdańska. Retrieved July 27, 2018 (Polish).
↑ Urząd Miejski w Gdańsku: The Mayors of Gdańsk - Zjazd Gdańszczan - de. Retrieved July 27, 2018 .
↑ ^a ^b ^c Döring, Detlef .: Correspondence including the correspondence from Luise Adelgunde Victorie Gottsched. Volume 6, July 1739-July 1740 . De Gruyter, Berlin 2012, ISBN 978-3-11-028733-2 , p. 672 .
^ Dascal, Marcelo., Racionero, Quintín., Cardoso, Adelino .: The art of controversies . Springer, Dordrecht 2006, ISBN 978-1-4020-5228-6 , pp. 451 .
^ ^A ^b Dunham, William, 1947-: The genius of Euler: reflections on his life and work . Mathematical Association of America, Washington, DC 2007, ISBN 0-88385-558-5 .

personal data
SURNAME	Ehler, Karl Leonhard Gottlieb
ALTERNATIVE NAMES	Ehler, Carl Leonhard Gottlieb
BRIEF DESCRIPTION	German politician and astronomer
DATE OF BIRTH	September 8, 1685
PLACE OF BIRTH	Danzig
DATE OF DEATH	November 22, 1753
Place of death	Danzig

[:0-1] EHLER CARL GOTTLIEB - Encyklopedia Gdańska. Retrieved July 27, 2018 (Polish).

[2] Urząd Miejski w Gdańsku: The Mayors of Gdańsk - Zjazd Gdańszczan - de. Retrieved July 27, 2018 .

[:1-3] Döring, Detlef .: Correspondence including the correspondence from Luise Adelgunde Victorie Gottsched. Volume 6, July 1739-July 1740 . De Gruyter, Berlin 2012, ISBN 978-3-11-028733-2 , p. 672 .

[4] Dascal, Marcelo., Racionero, Quintín., Cardoso, Adelino .: The art of controversies . Springer, Dordrecht 2006, ISBN 978-1-4020-5228-6 , pp. 451 .

[:2-5] A ^b Dunham, William, 1947-: The genius of Euler: reflections on his life and work . Mathematical Association of America, Washington, DC 2007, ISBN 0-88385-558-5 .