Colin Brian Haselgrove (26 September 1926 – 27 May 1964) was an

English English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national id ...

mathematician who is best known for his disproof of the

Pólya conjecture In number theory, the Pólya conjecture (or Pólya's conjecture) stated that "most" (i.e., 50% or more) of the natural numbers less than any given number have an ''odd'' number of prime factors. The conjecture was set forth by the Hungarian math ...

in 1958. Haselgrove was educated at

Blundell's School Blundell's School is a co-educational day and boarding independent school in the English public school tradition, located in Tiverton, Devon. It was founded in 1604 under the will of Peter Blundell, one of the richest men in England at the t ...

and from there won a scholarship to

King's College, Cambridge King's College is a constituent college of the University of Cambridge. Formally The King's College of Our Lady and Saint Nicholas in Cambridge, the college lies beside the River Cam and faces out onto King's Parade in the centre of the cit ...

. He obtained his Ph.D., which was supervised by

Albert Ingham Albert Edward Ingham (3 April 1900 – 6 September 1967) was an English mathematician. Early life and education Ingham was born in Northampton. He went to Stafford Grammar School and began his studies at Trinity College, Cambridge in January 1 ...

, from Cambridge in 1956.

Personal life

Haselgrove was married to fellow mathematician

Jenifer Haselgrove Jenifer Leech (née Wheildon Brown; later Haselgrove; 3 August 1930 – 13 March 2015) was a British physicist and computer scientist. She is most noted for her formulation of ray tracing equations in a cold magneto- plasma, now widely known in t ...

. After having suffered minor epileptic fits for several years caused by a brain tumor, he died in Manchester in May 1964.

References

External links

* {{DEFAULTSORT:Haselgrove, C. Brian 1926 births 1964 deaths People educated at Blundell's School 20th-century English mathematicians Number theorists Deaths from brain cancer in England Alumni of King's College, Cambridge