George Salmon

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George Salmon bigraphy, stories - mathematician  and  Anglican theologian

George Salmon : biography

25 September 1819 – 22 January 1904

The Reverend George Salmon (25 September 1819 – 22 January 1904) was, firstly, a mathematician whose publications in algebraic geometry were widely read in the second half of the 19th century. He was also an Anglican theologian who devoted himself mostly to theology for the last forty years of his life. His publications in theology were widely read, too. He spent his entire career at Trinity College Dublin.

Provost of Trinity College

George Salmon was Provost of Trinity College in Dublin from 1888 until his death in 1904. The highlight of his career may have been when in 1892 he presided over the great celebrations marking the tercentenary of the College, which had been founded by Queen Elizabeth I. His deep conservatism led him to strongly oppose women receiving degrees from the University. He eventually agreed to dropping his veto in 1901 when the Board voted in favour of allowing women to enter the university. This was one of his last acts as Provost. Symbolically in January 1904, just after he died, the first women undergraduates were admitted.

Theology

From the early 1860s onward Salmon was primarily occupied with theology. In 1866 he was appointed to a prestigious professorship in Divinity at Trinity College Dublin, at which point he resigned from his position in the mathematics department at Trinity. In 1871 he accepted an additional post of chancellor of St. Patrick’s Cathedral, Dublin.

One of his early publications in theology was in 1853 as a contributor to a book of rebuttals to the Tracts for the Times. Arguments against Roman Catholicism were a recurring theme in Salmon’s theology and culminated in his widely-read 1888 book Infallibility of the Church in which he argued that certain beliefs of the Roman church were absurd, especially the beliefs in the infallibility of the church and the infallibility of the pope. Salmon also wrote books about eternal punishment, miracles, and interpretation of the New Testament. His book An Historical Introduction to the Study of the Books of the New Testament, which was widely read, is an account of the reception and interpretation of the gospels in the early centuries of Christianity as seen through the writings of leaders such as Irenaeus and Eusebius.

Mathematics

In the late 1840s and the 1850s Salmon was in regular and frequent communication with Arthur Cayley and J.J. Sylvester. The three of them together with a small number of other mathematicians (including Charles Hermite) were developing a system for dealing with n-dimensional algebra and geometry. During this period Salmon published about 36 papers in journals. In these papers for the most part he solved narrowly defined, concrete problems in algebraic geometry, as opposed to more broadly systematic or foundational questions. But he was an early adopter of the foundational innovations of Cayley and the others. In 1859 he published the book Lessons Introductory to the Modern Higher Algebra (where the word "higher" means n-dimensional). This was for a while simultaneously the state-of-the-art and the standard presentation of the subject, and went through updated and expanded editions in 1866, 1876 and 1885, and was translated into German and French.

Meanwhile back in 1848 Salmon had published an undergraduate textbook entitled A Treatise on Conic Sections. This text remained in print for over fifty years, going though five updated editions in English, and was translated into German, French and Italian. Salmon himself did not participate in the expansions and updates of the more later editions. The German version, which was a "free adaptation" by Wilhelm Fiedler, was popular as an undergraduate text in Germany. Salmon also published two other mathematics texts, A Treatise on Higher Plane Curves (1852) and A Treatise on the Analytic Geometry of Three Dimensions (1862). These too were in print for a long time and went though a number of later editions, with Salmon delegating the work of the later editions to others.