Percy John Heawood

Percy Heawood
Born(1861-09-08)8 September 1861
Newport, England
Died24 January 1955(1955-01-24) (aged 93)
Durham, England
NationalityEnglish
Known forFour-color problem

Percy John Heawood (8 September 1861[1] – 24 January 1955[2]) was a British mathematician, who concentrated on graph colouring.

  1. ^ "The Saving of Durham Castle". Times obituary. Retrieved 26 May 2018.
  2. ^ GRO Register of Deaths: MAR 1955 1a 338 DURHAM C. – Percy J. Heawood