Colin Brian Haselgrove
Colin Brian Haselgrove , called Brian, (born September 26, 1926 in Chingford , † May 27, 1964 in Manchester ) was a British mathematician.
Haselgrove went to school in Chingford and Tiverton and studied from 1944 on a scholarship at King's College , Cambridge , where he had to interrupt his studies for two years because of tuberculosis. In 1948 he completed the second part of the Tripos exams and became a research student of Albert Ingham . In 1950 he won the Smith Prize and became a Fellow of King's College. In 1956 he received his doctorate from Ingham (Some problems in the analytic theory of numbers).
He dealt with analytical number theory, including asymptotic formulas for the partition function and extensions of the sieving method by Yuri Linnik (which he used in 1946 in his new proof of Vinogradov's theorem). He also worked in the math laboratory at EDSAC 1 in Cambridge (as did his wife Jennifer and fellow student John Leech ). In 1953 he implemented a program for group theory (the first computer program to list the secondary classes of subgroups with a finite index in a finitely presented group). The HLT method developed by Haselgrove, Leech and Trotter is still used today in computer programs (such as the standard program for subclass determination ACE). With Fred Hoyle he also developed programs for calculating the structure and evolution of stars. In 1956/57 he continued this work at Caltech for a few months . He was then a senior lecturer in computer science with Max Newman at the University of Manchester .
At the computer laboratory in Manchester, he continued to deal with astronomical problems (including for the radio astronomers in Jodrell Bank ), but also with applications in number theory. So he created tables of the Riemann zeta function with JCP Miller, including the zeros on the critical straight line. Later he also calculated tables of Dirichlet L functions. He dealt with numerical analysis and algorithms. In 1958 he found a counterexample to the conjecture by Pólya , his most famous achievement, for which he also made extensive use of computers.
He published a computer program for the pentomino puzzle in 1960 (in the magazine Eureka with his wife).
He died of a brain tumor in 1964.
His wife Jenifer Haselgrove (1930–2015), a physicist and computer scientist, later married John Leech.
Web links
- John J. O'Connor, Edmund F. Robertson : Colin Brian Haselgrove. In: MacTutor History of Mathematics archive .
Individual evidence
- ↑ Colin Brian Haselgrove in the Mathematics Genealogy Project (English)
| personal data | |
|---|---|
| SURNAME | Haselgrove, Colin Brian |
| BRIEF DESCRIPTION | British mathematician |
| DATE OF BIRTH | September 26, 1926 |
| PLACE OF BIRTH | Chingford |
| DATE OF DEATH | May 27, 1964 |
| Place of death | Manchester |