Skip to content
Catholic Online Logo

Mathematician, b. at Kilkenny, Ireland, 12 May, 1820; d. at Dublin, 3 Jan, 1891. He received his early education in the school of his native town. As soon as his age permitted he took service under the Board of National Education and taught in various schools, finally becoming head master of the Central Model School of Kilkenny. In his leisure moments he cultivated his natural taste for mathematics, learning at the same time Latin, French, and German. His success in obtaining a geometrical solution of Poncelet's problem brought him to the notice of mathematicians, including Dr. Salmon and Professor Townsend of Trinity College, Dublin. Following the advice of the latter, he entered Trinity in 1858, though approaching his fortieth year. He won a sizarship in 1859, a scholarship in 1861 and took his B. A. degree in 1862. During the following eleven years he was mathematical master in the Kingstown School where he gained distinction by his success in training candidates for the Indian Civil Service examinations. In 1873 he became professor of higher mathematics and mathematical physics at the Catholic University in Dublin. Shortly afterwards he was offered a professorship at Trinity which he refused, preferring to devote his energies to the advancement of Catholic higher education. In 1881 he was elected to a fellowship in the Royal University and at the same time was appointed lecturer on mathematics at University College, Stephen's Green, a position which he held until his death.

Casey carried on an extensive correspondence with mathematicians at home and abroad, and during his life received many distinctions in recognition of his work in mathematics. In 1866 he was elected a member of the Royal Irish Academy, serving for many years as a member of its council, and for four years as vice-president. He received the honorary degree of LL.D. from Trinity in 1869. In 1874 he was elected a member of the London Mathematical Society, and in 1875 he was made a Fellow of the Royal Society. In 1878 he served as secretary of the British Association during its Dublin meeting. From 1862-1868 he was one of the editors of the "Oxford, Cambridge, and Dublin Messenger of Mathematics" and for several years Dublin correspondent of the "Jahrbuch über die Fortschritte der Mathemtik". Casey was an enthusiastic and devoted teacher and yet found time for much original work in mathematics, confining himself chiefly to geometry which he treated with much ability. He was withal a man of ardent piety, being a member of the Third Order of St. Francis and for many years a daily communicant. He was the author of a number of mathematical papers, many of them published in the "Philosophical Transactions" and in the "Proceedings of the Royal Irish Academy". In 1881 he began a series of textbooks which were highly esteemed. Among his works are: "On Cubic Transformations" (Dublin, 1880); "Sequel to Euclid" (Dublin, 1881); "Treatise on the Analytic Geometry of the Point, Line, Circle and Conic Sections" (Dublin, 1885); "Treatise on Plane Trigonometry containing an account of the Hyperbolic Functions" (Dublin, 1888); "Treatise on Spherical Geometry" (Dublin, 1889).

More Encyclopedia

The Catholic Encyclopedia is the most comprehensive resource on Catholic teaching, history, and information ever gathered in all of human history. This easy-to-search online version was originally printed between 1907 and 1912 in fifteen hard copy volumes.

Catholic Encyclopedia

Designed to present its readers with the full body of Catholic teaching, the Encyclopedia contains not only precise statements of what the Church has defined, but also an impartial record of different views of acknowledged authority on all disputed questions, national, political or factional. In the determination of the truth the most recent and acknowledged scientific methods are employed, and the results of the latest research in theology, philosophy, history, apologetics, archaeology, and other sciences are given careful consideration.

No one who is interested in human history, past and present, can ignore the Catholic Church, either as an institution which has been the central figure in the civilized world for nearly two thousand years, decisively affecting its destinies, religious, literary, scientific, social and political, or as an existing power whose influence and activity extend to every part of the globe. In the past century the Church has grown both extensively and intensively among English-speaking peoples. Their living interests demand that they should have the means of informing themselves about this vast institution, which, whether they are Catholics or not, affects their fortunes and their destiny.

Copyright © Catholic Encyclopedia. Robert Appleton Company New York, NY. Volume 1: 1907; Volume 2: 1907; Volume 3: 1908; Volume 4: 1908; Volume 5: 1909; Volume 6: 1909; Volume 7: 1910; Volume 8: 1910; Volume 9: 1910; Volume 10: 1911; Volume 11: - 1911; Volume 12: - 1911; Volume 13: - 1912; Volume 14: 1912; Volume 15: 1912

Catholic Online Catholic Encyclopedia Digital version Compiled and Copyright © Catholic Online


Newsletter Sign Up icon

Stay up to date with the latest news, information, and special offers

Subscribe to Catholic OnlineYouTube Channel

the FEED
by Catholic Online

  • Alabama Supreme court recognizes same-sex adoption
  • St. Joan of Arc: Saint of the Day for Monday, May 30, 2016
  • 100k Americans work for China as China continues to purchase major US ...
  • How much did Goldman Sachs' CEO invest in hedge fund?: Hillary ...
  • Daily Readings for Monday, May 30, 2016
  • Daily Reading for Wednesday, June 1st, 2016 HD Video
  • Advent Prayer HD Video

Daily Readings

Reading 1, First Kings 8:41-43
41 'Even the foreigner, not belonging to your people Israel but coming ... Read More

Psalm, Psalms 117:1, 2
1 Alleluia! Praise Yahweh, all nations, extol him, all ... Read More

Gospel, Luke 7:1-10
1 When he had come to the end of all he wanted the people to hear, he ... Read More

Reading 2, Galatians 1:1-2, 6-10
1 From Paul, an apostle appointed not by human beings nor through any ... Read More

Saint of the Day

Saint of the Day for May 29th, 2016 Image

St. Maximinus of Trier
May 29: Bishop of Trier, Germany, from 332, and a miracle ... Read More