| John Arthur Todd | |
| Born | 23 August 1908 Liverpool, England |
|---|---|
| Died | 22 December 1994 (aged 86) Croydon, England |
| Residence | UK |
| Nationality | English |
| Fields | Mathematician |
| Alma mater | University of Cambridge |
| Doctoral advisor | H.F. Baker |
| Doctoral students | Roger Penrose |
| Known for | Todd class, Todd-Coxeter process |
John Arthur Todd (23 August 1908 - 22 December 1994) was a British geometer. Events 79 - Mount Vesuvius begins stirring on the feast day of Vulcan the Roman god of fire Year 1908 ( MCMVIII) was a Leap year starting on Wednesday (link will display the full calendar of the Gregorian calendar (or a Leap year Liverpool ( is a City and Metropolitan borough of Merseyside, England along the eastern side of the Mersey Estuary England is a Country which is part of the United Kingdom. Its inhabitants account for more than 83% of the total UK population whilst its mainland Events 1790 - The Turkish fortress of Izmail is stormed and captured by Suvorov and his Russian armies Year 1994 ( MCMXCIV) was a Common year starting on Saturday (link will display full 1994 Gregorian calendar) Croydon is a large town and major commercial centre in South London, and the principal settlement of the London Borough of Croydon. England is a Country which is part of the United Kingdom. Its inhabitants account for more than 83% of the total UK population whilst its mainland The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom, the UK or Britain,is a Sovereign state located England is a Country which is part of the United Kingdom. Its inhabitants account for more than 83% of the total UK population whilst its mainland A mathematician is a person whose primary area of study and research is the field of Mathematics. Alma mater is Latin for "nourishing mother" It was used in Ancient Rome as a title for the mother Goddess, and in Medieval The University of Cambridge (often Cambridge University) located in Cambridge, England, is the second-oldest university in the A doctorate is an Academic degree that indicates the highest level of academic achievement Henry Frederick Baker ( July 3, 1866 - March 17, 1956) was a British mathematician working mainly in Algebraic geometry Sir Roger Penrose, PhD, OM, FRS (born 8 August 1931) is an English Mathematical physicist and Emeritus In Mathematics, the Todd class is a certain construction now considered a part of the theory in Algebraic topology of Characteristic classes The Todd class Events 79 - Mount Vesuvius begins stirring on the feast day of Vulcan the Roman god of fire Year 1908 ( MCMVIII) was a Leap year starting on Wednesday (link will display the full calendar of the Gregorian calendar (or a Leap year Events 1790 - The Turkish fortress of Izmail is stormed and captured by Suvorov and his Russian armies Year 1994 ( MCMXCIV) was a Common year starting on Saturday (link will display full 1994 Gregorian calendar) The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom, the UK or Britain,is a Sovereign state located He was born in Liverpool, and went to Trinity College of the University of Cambridge in 1925. Liverpool ( is a City and Metropolitan borough of Merseyside, England along the eastern side of the Mersey Estuary Trinity College is a constituent college of the University of Cambridge in Cambridge, England. The University of Cambridge (often Cambridge University) located in Cambridge, England, is the second-oldest university in the He did research under H.F. Baker, and in 1931 took a position at the University of Manchester. Henry Frederick Baker ( July 3, 1866 - March 17, 1956) was a British mathematician working mainly in Algebraic geometry The University of Manchester is a " red brick " civic University located in Manchester, England. He became a lecturer at Cambridge in 1937. He remained at Cambridge for the rest of his working life.
The Todd class in the theory of the higher-dimensional Riemann-Roch theorem is an example of a characteristic class (or, more accurately, a reciprocal of one) that was discovered by Todd in work published in 1937. In Mathematics, the Todd class is a certain construction now considered a part of the theory in Algebraic topology of Characteristic classes The Todd class In Mathematics, specifically in Complex analysis and Algebraic geometry, the Riemann–Roch theorem is an important tool in the computation of the dimension In Mathematics, a characteristic class is a way of associating to each Principal bundle on a Topological space X a Cohomology class It used the methods of the Italian school of algebraic geometry. In relation with the history of Mathematics, the Italian school of Algebraic geometry refers to the work over half a century or more (flourishing roughly 1885-1935 The Todd-Coxeter process for coset enumeration is a major method of computational algebra, and dates from a collaboration with H.S.M. Coxeter in 1936. In Mathematics, coset enumeration is the problem of counting the Cosets of a subgroup H of a group G given in terms of a presentation Harold Scott MacDonald "Donald" Coxeter CC ( February 9, 1907 – March 31, 2003) is regarded as one of the great In 1953 he and Coxeter discovered the Coxeter-Todd lattice. In mathematics the Coxeter–Todd lattice K12 discovered by, is a the 12-dimensional even integral lattice of discriminant 36 with no norm-2 vectors In 1954 he and G. C. Shephard classified the finite complex reflection groups. In Mathematics, a complex reflection group is a group acting on a finite-dimensional complex vector space that is generated by complex reflections: non-trivial
| Persondata | |
|---|---|
| NAME | Todd, John Arthur |
| ALTERNATIVE NAMES | |
| SHORT DESCRIPTION | English Mathematician |
| DATE OF BIRTH | 23 August 1908 |
| PLACE OF BIRTH | Liverpool, England |
| DATE OF DEATH | 22 December 1994 |
| PLACE OF DEATH | Croydon, England |
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