Harold Scott MacDonald Coxeter

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Harold Scott MacDonald Coxeter CC FRS FRSC
Born	(1907-02-09)9 February 1907 London, England
Died	31 March 2003(2003-03-31) (aged 96) Toronto, Ontario, Canada
Alma mater	University of Cambridge (B.A., 1929; Ph.D., 1931)
Known for	Coxeter element Coxeter functor Coxeter graph Coxeter group Coxeter matroid Coxeter notation Coxeter's loxodromic sequence of tangent circles Coxeter–Dynkin diagram Coxeter–Todd lattice Boerdijk–Coxeter helix Goldberg–Coxeter construction Todd–Coxeter algorithm* Tutte–Coxeter graph LCF notation Regular skew apeirohedra
Spouse(s)	Hendrina, died in 1999
Children	a daughter, Susan Thomas, and a son, Edgar
Awards	Smith's Prize (1931) Henry Marshall Tory Medal (1949) FPS (1950) Jeffery–Williams Prize (1973) CRM-Fields-PIMS prize (1995) Sylvester Medal (1997)
Scientific career
Fields	Geometry
Institutions	University of Toronto
Doctoral advisor	H. F. Baker[1]
Doctoral students	W. G. Brown Norman Johnson

Harold Scott MacDonald "Donald" Coxeter CC FRS FRSC (9 February 1907 – 31 March 2003)^[2] was a British-Canadian geometer and mathematician. He is regarded as one of the greatest geometers of the 20th century.^[3]