About Hallard T. Croft
Lived 1936 – 2025 (aged 89). Hallard T. Croft was a mathematician.
Hallard Thomas Croft (15 April 1936 – 15 September 2025) was an English mathematician.
Life and career Born in Bromley, he was educated at City of London School A fellow of Peterhouse, Cambridge, from 1963 to 2003, in 1967 he invented a geometric shape called Croft's Tortoise and in 1991 he co-authored Unsolved Problems in Geometry with Kenneth Falconer and Richard K. Guy.
Croft clashed with Hugh Trevor-Roper after the latter became Master of Peterhouse in 1980 when Croft was Director of Studies in mathematics and Senior Fellow; Croft's conservatism led him to deeply dislike Trevor-Roper, and the upshot was that he was re-elected as a Fellow in 1983 without his seniority. Friends suggested that Trevor-Roper disliked Croft because of his homosexuality.
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Frequently asked questions
Who was Hallard T. Croft?
Ph.D. University of Cambridge 1961
When was Hallard T. Croft born?
Hallard T. Croft was born on 15 April 1936.
When did Hallard T. Croft die?
Hallard T. Croft died on 15 September 2025.
What was Hallard T. Croft's occupation?
Hallard T. Croft was a mathematician.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). Hallard T. Croft. https://biography.guide/hallard-t-croft/
MLA: "Hallard T. Croft." Biography.guide, https://biography.guide/hallard-t-croft/.
Chicago: "Hallard T. Croft." Biography.guide. https://biography.guide/hallard-t-croft/.
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