DE MORGAN, Augustus.

Inquire · Offered by Peter Harrington

Formal Logic: or, The Calculus of Inference, Necessary and Probable. First edition, presentation copy, inscribed in a secretarial hand on the front free endpaper, "Professor Hargreave, From the author". The recipient was De Morgan's colleague and former student, the mathematician and judge Charles James Hargreave, who has annotated the text throughout.Hargreave (1820-1866) studied under De Morgan at University College, London, and in 1843 was appointed professor of jurisprudence at the same institution. He continued to contribute to mathematics alongside his judicial work and in 1849 was awarded the Royal Society's Royal Medal for his essay on linear differential equations. The book was inherited by his nephew, Henry Hargreave Fawcett (1860-1943), whose ownership signature dated 1884 is on the front pastedown; Fawcett's education was funded by Hargreave's widow, Sarah (1830-1885).His principal contribution to the field of mathematical logic, Formal Logic "is the work in which De Morgan took the first steps to codify logic into an algebraic system" (Tomash & Williams).

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