Leonard Roth (29 August 1904

Edmonton, London Edmonton is a town in north London, England within the London Borough of Enfield, a local government district of Greater London. The northern part of the town is known as Lower Edmonton or Edmonton Green, and the southern part as Upper Edmonto ...

England England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe b ...

– 28 November 1968

Pittsburgh, Pennsylvania Pittsburgh ( ) is a city in the Commonwealth (U.S. state), Commonwealth of Pennsylvania, United States, and the county seat of Allegheny County, Pennsylvania, Allegheny County. It is the most populous city in both Allegheny County and Wester ...

) was a mathematician working in the

Italian school of algebraic geometry In relation to the history of mathematics, the Italian school of algebraic geometry refers to mathematicians and their work in birational geometry, particularly on algebraic surfaces, centered around Rome roughly from 1885 to 1935. There were 30 ...

. He introduced an example of a

unirational variety In mathematics, a rational variety is an algebraic variety, over a given field ''K'', which is birationally equivalent to a projective space of some dimension over ''K''. This means that its function field is isomorphic to :K(U_1, \dots , U_d), the ...

that was not rational (though his proof that it was not rational was incomplete). Roth was educated at

Latymer Upper School (Slowly Therefore Surely) , established = , closed = , sister_school = Godolphin and Latymer School , type = Public schoolIndependent day school , head_label = H ...

Dulwich College Dulwich College is a 2–19 independent, day and boarding school for boys in Dulwich, London, England. As a public school, it began as the College of God's Gift, founded in 1619 by Elizabethan actor Edward Alleyn, with the original purpose of ...

and

Clare College, Cambridge Clare College is a constituent college of the University of Cambridge in Cambridge, England. The college was founded in 1326 as University Hall, making it the second-oldest surviving college of the University after Peterhouse. It was refounded ...

, where he graduated as a Wrangler in 1926.John J. O'Connor and

Edmund F. Robertson Edmund Frederick Robertson (born 1 June 1943) is a professor emeritus of pure mathematics at the University of St Andrews. Work Robertson is one of the creators of the MacTutor History of Mathematics archive, along with John J. O'Connor. Rob ...

"Leonard Roth"
''

MacTutor History of Mathematics archive The MacTutor History of Mathematics archive is a website maintained by John J. O'Connor and Edmund F. Robertson and hosted by the University of St Andrews in Scotland. It contains detailed biographies on many historical and contemporary mathemati ...

''. Accessed 20 April 2020. His sister was Queenie Roth, literary critic and wife of

F. R. Leavis Frank Raymond "F. R." Leavis (14 July 1895 – 14 April 1978) was an English literary critic of the early-to-mid-twentieth century. He taught for much of his career at Downing College, Cambridge, and later at the University of York. Leavis ra ...

Publications

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Publications

References

Further reading