Charles Jasper Joly FRS (27 June 1864 – 4 January 1906) was an Irish mathematician and astronomer who became Royal Astronomer of Ireland.[1][2] He was an important figure in the study of quaternions.[3]
Charles Jasper Joly | |
|---|---|
| Royal Astronomer of Ireland | |
| In office 1897–1906 | |
| Preceded by | Arthur Alcock Rambaut |
| Succeeded by | Edmund Taylor Whittaker |
| Personal details | |
| Born | 27 June 1864 Tullamore, County Offaly, Ireland |
| Died | 4 January 1906 (aged 41) Dunsink, County Dublin, Ireland |
| Alma mater | Trinity College Dublin |
| Known for | Quaternions |
Early life edit
Joly was born at St Catherine's Rectory, Hop Hill, Tullamore, County Offaly, the eldest of six children of Rev. John Swift Joly (1818-1887) and Elizabeth Slator (1835-1904). He was educated at Galway Grammar School and later at Trinity College Dublin,[4] where he took a fellowship in 1894.
Career edit
In 1897, he was appointed Royal Astronomer of Ireland and he took up his new position at Dunsink Observatory.
In 1900, he went on the RIA/RDS eclipse expedition to Spain and later took part in the British Association visit to South Africa in 1905.
In 1902, he became secretary of the Royal Irish Academy.
Honours edit
He was made a Fellow of the Royal Society in 1904.[1]
Death edit
Shortly after his return from South Africa, he and his daughter contracted typhoid. He died in 1906 and his daughter survived.[4]
He was buried at Mount Jerome cemetery, Dublin.
Publications edit
- William Rowan Hamilton and C.J. Joly: Elements of Quaternions (volume I, 1899) Longmans, Green & Co, (volume II, 1901).
- Quaternions and Projective Geometry (1903) Philosophical Transactions of the Royal Society of London 201:223–327.
- A Manual of Quaternions (1905) from Cornell University Historical Math Monographs
Charles Joly published his articles in Royal Irish Academy journals, generally the Transactions, but as indicated below, in Proceedings of the Royal Irish Academy in 1897, 98, and 99:
- 1892: Theory of linear vector functions. 30:597 to 647.
- 1896: Properties of general congruency of curves. 31:363 to 92.
- 1897: On the homographic divisions of planes, spheres, and space and on the systems of lines joining corresponding points. Proceedings RIA 4(4): 515.
- 1898: The associative algebra applicable to hyperspace. Proceedings R.I.A. 5(1):73 to 123.
- 1899: Astaties and quaternion functions. Proceedings R.I.A. 5(3):366.
- 1902: Interpretation of a quaternion as a point symbol. 32A: 1 to 16.
- 1902: Quaternion arrays. 32:17 to 30.
- 1902: Quadratic screw system: a study of a family of quadratic complexes. 32A:155 to 238.
- 1902: Geometry of a three-system of screws. 32A:239 to 70.
References edit
- ^ a b "Obituary". New York Times. 5 January 1906.
- ^ "Obituary: Charles Jasper Joly". MNRAS. 66: 177–178. 1906. Bibcode:1906MNRAS..66..177.. doi:10.1093/mnras/66.4.177.
- ^ O'Connor, J. J.; Robertson, E. F. (June 2021). "Charles Jasper Joly". MacTutor Index.
- ^ a b Byrne, Patricia. "Joly, Charles Jasper". Dictionary of Irish Biography. Retrieved 17 December 2023.
Sources edit
- G. B. Mathews (1907) "C. J. Joly", Proceedings of the London Mathematical Society vols 2–4, issue 1, p. 1.
External links edit
Works by or about Charles Jasper Joly at Wikisource
