John Leech (mathematician)

For other people named John Leech, see John Leech (disambiguation).

John Leech (21 July 1926 in Weybridge, Surrey – 28 September 1992 in Scotland) was a British mathematician working in number theory, geometry and combinatorial group theory. He is best known for his discovery of the Leech lattice in 1965. He also discovered Ta(3) in 1957. Leech was married to Jenifer Haselgrove, a British radio scientist.

John Leech
Born	(1926-07-21)21 July 1926 Weybridge, Surrey
Died	28 September 1992(1992-09-28) (aged 66) Scotland
Nationality	British
Occupation	Mathematician
Known for	Leech lattice