Mathematician:John Thomas Graves

Mathematician
Irish jurist and mathematician who both inspired to discover the quaternions, and discovered the octonions, which he called the octaves.

Brother of both the mathematician and the writer and clergyman Robert Perceval Graves.

Nationality
Irish

History

 * Born: 4 December 1806 in Dublin, Ireland
 * Died: 29 March 1870 in Cheltenham, England

Theorems and Definitions

 * Eight Squares Identity
 * Graves-Cayley Numbers (with ), also known as Cayley Numbers, or octonions

Publications

 * 1829: An Attempt to Rectify the Inaccuracy of some Logarithmic Formulae
 * 1836: On the lately proposed logarithms of unity, in reply to Professor De Morgan