Edward John Routh

Edward Routh
Edward John Routh (1831–1907)
Born	(1831-01-20)20 January 1831 Quebec, Canada
Died	7 June 1907(1907-06-07) (aged 76) Cambridge, England
Residence	United Kingdom of Great Britain and Ireland
Nationality	English
Fields	Mathematician
Institutions	University of London Peterhouse, Cambridge
Alma mater	University College London Peterhouse, Cambridge
Academic advisors	William Hopkins Augustus De Morgan Isaac Todhunter
Notable students	John Strutt (Rayleigh) J. J. Thomson George Darwin Alfred North Whitehead Joseph Larmor
Known for	Routh's rule Routh-Hurwitz theorem Routh stability criterion Routh array Routhian Routh's theorem Routh's algorithm Kirchhoff-Routh function
Notable awards	Smith's Prize (1854) Adams Prize (1877)
Notes
Routh's wife was the daughter of George Biddell Airy. Routh was the grandson of Jean-Thomas Taschereau

Edward John Routh FRS (/raʊθ/; 20 January 1831 – 7 June 1907), was an English mathematician, noted as the outstanding coach of students preparing for the Mathematical Tripos examination of the University of Cambridge in its heyday in the middle of the nineteenth century. He also did much to systematise the mathematical theory of mechanics and created several ideas critical to the development of modern control systems theory.

Routh was born of an English father and a French-Canadian mother in Quebec, at that time the British colony of Lower Canada. His father's family could trace its history back to the Norman conquest when it acquired land at Routh near Beverley, Yorkshire. His mother's family, the Taschereau family, was well-established in Quebec, tracing their ancestry back to the early days of the French colony. His parents were Sir Randolph Isham Routh (1782–1858) and his second wife, Marie Louise Taschereau (1810–1891). Randolph was a commissariat officer who had served at the Battle of Waterloo, and Marie Louise was the daughter of judge Jean-Thomas Taschereau and the sister of judge Jean-Thomas and cardinal Elzéar-Alexandre Taschereau.