# Author:Augustus de Morgan

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←Author Index: De | Augustus De Morgan (1806–1871) |

English mathematician and logician; Professor of Mathematics in University College, London; his work Formal Logic (1847) forms the basis of much later and current work in mathematical logic.
This author wrote articles for the Dictionary of Greek and Roman Biography and Mythology. Articles written by this author are designated in the Dictionary of Greek and Roman Biography and Mythology by the initials "A.de M." |

## Works[edit]

- The elements of arithmetic, 1830 (external scan)
- Remarks on elementary education in science. (short work) 1830 (external scan)
- An explanation of the gnomonic projection of the sphere; and of such points of astronomy as are most necessary in the use of astronomical maps: being a description of the construction and use of the larger and smaller maps of the stars; as also of the six maps of the earth, 1836 (external scan)
*The Differential and Integral Calculus*1836 (external scan)- The connexion of number and magnitude, 1836 (external scan)
- Elements of algebra, preliminary to the differential calculus, 1837 (external scan)
- Elements of trigonometry, and trigonometrical analysis, preliminary to the differential calculus, 1837 (external scan)
- An essay on probabilities, 1838 (external scan)
- First notions of logic, 1839 (external scan)
- Elements of arithmetic, 1840 (external scan)
- Natural philosophy. 1841 (external scan)
- The globes, celestial and terrestrial, 1845 (external scan)
- Arithmetical books, 1847 (external scan)
- (individual articles)
*Penny Cyclopedia* *Trigonometry and Double Algebra*, 1849- (letters to journal)
*Athenæum* *Formal Logic*, 1847 (external scan)- A treatise on problems of maxima and minima, solved by algebra. By Ramchundra. … under the superintendence of Augustus De Morgan, 1859 (external scan)
- Syllabus of a proposed system of logic, 1860 (external scan)
- The Quadrature of the Circle: Correspondence Between James Smith and Augustus De Morgan, 1861 (external scan)
*Seven-figure Logarithms of Numbers from 1 to 108000 and of Sines, Cosines, Tangents, Cotangents*by Heinrich Ludwig Friedrich Schrön with Augustus De Morgan, (1865) (external scan)*The book of almanacs*(1871) (external scan)*Budget of Paradoxes*(1882) (external scan)*Threescore Years and Ten: with Sophie Elisabeth de Morgan*(1895) (external scan)*On the study and difficulties of mathematics*(1898) (external scan)*On the Difficulty of Correct Description of Books*(1902) (external scan)*Essays on the life and work of Newton*(1914) (external scan)

- Articles signed as [A.de M.] in the Dictionary of Greek and Roman Biography and Mythology
- "On the Early History of Infinitesimals," in the
*Philosophical Magazine*, November, 1852. *Life of Sir William Rowan Hamilton*(1882) (external scan) includes correspondence with W. R. Hamilton

## Works about de Morgan[edit]

- "Augustus De Morgan," in
*Encyclopædia Britannica, Ninth Edition*(1875–1889) *Memoir of Augustus De Morgan*by Sophia Elizabeth De Morgan, 1809-1892 (1882) (external scan)- "De Morgan, Augustus," in
*Dictionary of National Biography, 1885-1900*, London: Smith, Elder, & Co. (1885–1900) in 63 vols. - "De Morgan, Augustus," in
*A Short Biographical Dictionary of English Literature*, by John William Cousin, London: J. M. Dent & Sons (1910) - "De Morgan, Augustus," in
*Encyclopædia Britannica*(11th ed., 1911)

**public domain** worldwide because the author died at least 100 years ago. Translations or editions published later may be copyrighted. Posthumous works may be copyrighted based on how long they have been published in certain countries and areas.