Charles Jasper Joly (27 June 1864 – 4 January 1906) was an

Irish Irish may refer to: Common meanings * Someone or something of, from, or related to: ** Ireland, an island situated off the north-western coast of continental Europe ***Éire, Irish language name for the isle ** Northern Ireland, a constituent unit ...

mathematician A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, structure, space, models, and change. History On ...

and

astronomer An astronomer is a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth. They observe astronomical objects such as stars, planets, natural satellite, moons, comets and galaxy, g ...

who became

Royal Astronomer of Ireland The Dunsink Observatory is an astronomical observatory established in 1785 in the townland of Dunsink in the outskirts of the city of Dublin, Ireland.Alexander Thom''Irish Almanac and Official Directory''7th ed., 1850 p. 258. Retrieved: 2011-02- ...

.Obituary, New York Times, 5 January 1906

Life

He was born at St Catherine's Rectory, Hop Hill,

Tullamore Tullamore (; ) is the county town of County Offaly in Republic of Ireland, Ireland. It is on the Grand Canal (Ireland), Grand Canal, in the middle of the county, and is the fourth most populous town in the Midland Region, Ireland, midlands reg ...

County Offaly County Offaly (; ga, Contae Uíbh Fhailí) is a county in Ireland. It is part of the Eastern and Midland Region and the province of Leinster. It is named after the ancient Kingdom of Uí Failghe. It was formerly known as King's County, in hono ...

, 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 Trinity College may refer to: Australia * Trinity Anglican College, an Anglican coeducational primary and secondary school in , New South Wales * Trinity Catholic College, Auburn, a coeducational school in the inner-western suburbs of Sydney, New ...

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, where he took a fellowship in 1894. He became

Andrews Professor of Astronomy The Andrews Professor of Astronomy is a chair in astronomy in Trinity College Dublin was established in 1783 in conjunction with the establishment of Dunsink Observatory. Dunsink was founded in 1785 following a bequest by Provost Francis Andrews ...

at Trinity College. In 1897, he was appointed Royal Astronomer of Ireland and he took up his new position at

Dunsink Observatory The Dunsink Observatory is an astronomical observatory established in 1785 in the townland of Dunsink in the outskirts of the city of Dublin, Ireland.Alexander Thom''Irish Almanac and Official Directory''7th ed., 1850 p. 258. Retrieved: 2011-02-2 ...

. He was secretary of the

Royal Irish Academy The Royal Irish Academy (RIA; ga, Acadamh Ríoga na hÉireann), based in Dublin, is an academic body that promotes study in the sciences, humanities and social sciences. It is Ireland's premier List of Irish learned societies, learned socie ...

and a Fellow of the

Royal Astronomical Society (Whatever shines should be observed) , predecessor = , successor = , formation = , founder = , extinction = , merger = , merged = , type = NGO ...

. He was made a

Fellow of the Royal Society Fellowship of the Royal Society (FRS, ForMemRS and HonFRS) is an award granted by the judges of the Royal Society of London to individuals who have made a "substantial contribution to the improvement of natural science, natural knowledge, incl ...

in 1904. He died at his residence in

Dunsink Dunsink () is a townland in the civil parish of Castleknock, Dublin, in Ireland. The townland has an area of approximately , and had a population of 323 people as of the 2011 census. The townland is the site of Dunsink Observatory, where Wil ...

County Dublin "Action to match our speech" , image_map = Island_of_Ireland_location_map_Dublin.svg , map_alt = map showing County Dublin as a small area of darker green on the east coast within the lighter green background of ...

, in 1906.Proceedings of the Royal Society of London: Containing papers of Charles Jasper Joly
By Royal Society (Great Britain)

Publications

William Rowan Hamilton Sir William Rowan Hamilton Doctor of Law, LL.D, Doctor of Civil Law, DCL, Royal Irish Academy, MRIA, Royal Astronomical Society#Fellow, FRAS (3/4 August 1805 – 2 September 1865) was an Irish mathematician, astronomer, and physicist. He was the ...

and C.J. Joly: Elements of Quaternions (volume I, 1899)

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, (volume II, 1901).
Quaternions and Projective Geometry
(1903) ''

Philosophical Transactions of the Royal Society of London ''Philosophical Transactions of the Royal Society'' is a scientific journal published by the Royal Society. In its earliest days, it was a private venture of the Royal Society's secretary. It was established in 1665, making it the first journa ...

'' 201:223–327.
''A Manual of Quaternions''
(1905) from

Cornell University Cornell University is a private statutory land-grant research university based in Ithaca, New York. It is a member of the Ivy League. Founded in 1865 by Ezra Cornell and Andrew Dickson White, Cornell was founded with the intention to teach an ...

Historical Math Monographs Charles Joly published his articles in

journals, generally the ''Transactions'', but as indicated below, in ''

Proceedings of the Royal Irish Academy The ''Proceedings of the Royal Irish Academy'' (''PRIA'') is the journal of the Royal Irish Academy, founded in 1785 to promote the study of science, polite literature, and antiquities Antiquities are objects from antiquity, especially the ...

'' 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

Sources

G. B. Mathews 250px George Ballard Mathews, FRS (23 February 1861 – 19 March 1922) was an English mathematician. He was born in London. He studied at the Ludlow Grammar School which had instruction in Hebrew and Sanscrit as well as in Greek and Latin. He p ...

(1907) "C. J. Joly", ''

Proceedings of the London Mathematical Society The London Mathematical Society (LMS) is one of the United Kingdom's learned societies for mathematics (the others being the Royal Statistical Society (RSS), the Institute of Mathematics and its Applications (IMA), the Edinburgh Mathematical S ...

'' vols 2–4, issue 1, p. 1.

External links

* {{DEFAULTSORT:Joly, Charles Jasper 1864 births 1906 deaths 19th-century Irish mathematicians 20th-century Irish mathematicians Academics of Trinity College Dublin Alumni of Trinity College Dublin Directors of Dunsink Observatory Fellows of the Royal Society Irish astronomers Irish mathematicians People from Tullamore, County Offaly