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De Morgan
De Morgan or de Morgan is a surname, and may refer to: *Augustus De Morgan (1806–1871), British mathematician and logician. ** De Morgan's laws (or De Morgan's theorem), a set of rules from propositional logic. ** The De Morgan Medal, a triennial mathematics prize awarded by the London Mathematical Society. * William De Morgan (1839–1917), English designer, potter, ceramics-worker, and novelist. * Evelyn De Morgan (1855–1919), English pre-Raphaelite painter. * Jacques de Morgan Jean-Jacques de Morgan (3 June 1857 – 14 June 1924) was a French mining engineer, geologist, and archaeologist. He was the director of antiquities in Egypt during the 19th century, and excavated in Memphis and Dahshur, providing many dra ... (1857–1924), French archaeologist. {{surname ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Augustus De Morgan
Augustus De Morgan (27 June 1806 – 18 March 1871) was a British mathematician and logician. He is best known for De Morgan's laws, relating logical conjunction, disjunction, and negation, and for coining the term "mathematical induction", the underlying principles of which he formalized. De Morgan's contributions to logic are heavily used in many branches of mathematics, including set theory and probability theory, as well as other related fields such as computer science. Biography Childhood Augustus De Morgan was born in Madurai, in the Carnatic Sultanate, Carnatic region of India, in 1806. His father was Lieutenant-Colonel John De Morgan (1772–1816), who held various appointments in the service of the East India Company, and his mother, Elizabeth (née Dodson, 1776–1856), was the granddaughter of James Dodson (mathematician), James Dodson, who computed a table of anti-logarithms (inverse logarithms). Augustus De Morgan became blind in one eye within a few months of his bi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Morgan Medal
The De Morgan Medal is a prize for outstanding contribution to mathematics, awarded by the London Mathematical Society. The Society's most prestigious award, it is given in memory of Augustus De Morgan, who was the first President of the society. It is awarded every three years, usually to a mathematician living and working in the United Kingdom. In 1968, Mary Cartwright became the first woman to receive the award. De Morgan Medal winners Recipients of the De Morgan Medal include the following: *1884 Arthur Cayley *1887 James Joseph Sylvester *1890 John William Strutt, 3rd Baron Rayleigh, Lord Rayleigh *1893 Felix Klein *1896 Samuel Roberts (mathematician), S. Roberts *1899 William Burnside *1902 A. G. Greenhill *1905 H. F. Baker *1908 J. W. L. Glaisher *1911 Horace Lamb *1914 J. Larmor *1917 W. H. Young *1920 E. W. Hobson *1923 P. A. MacMahon *1926 Augustus Edward Hough Love, A. E. H. Love *1929 Godfrey Harold Hardy *1932 Bertrand Russell *1935 E. T. Whittaker *1938 John Eden ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Morgan's Laws
In propositional calculus, propositional logic and Boolean algebra, De Morgan's laws, also known as De Morgan's theorem, are a pair of transformation rules that are both Validity (logic), valid rule of inference, rules of inference. They are named after Augustus De Morgan, a 19th-century British mathematician. The rules allow the expression of Logical conjunction, conjunctions and Logical disjunction, disjunctions purely in terms of each other via logical negation, negation. The rules can be expressed in English as: * The negation of "A and B" is the same as "not A or not B". * The negation of "A or B" is the same as "not A and not B". or * The Complement (set theory), complement of the union of two sets is the same as the intersection of their complements * The complement of the intersection of two sets is the same as the union of their complements or * not (A or B) = (not A) and (not B) * not (A and B) = (not A) or (not B) where "A or B" is an "inclusive or" meaning ''at least' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William De Morgan
William Frend De Morgan (16 November 1839 – 15 January 1917) was an English potter, tile designer and novelist. A lifelong friend of William Morris, he designed tiles, stained glass and furniture for Morris & Co. from 1863 to 1872. His tiles often recall medieval or Islamic design patterns. He applied innovative glazes and firing techniques. Galleons and fish were common motifs, as were "fantastical" birds and animals. Many of De Morgan's tiles were designed to create intricate patterns when several were laid together. Life and work Born in Gower Street, London, the son of the distinguished mathematician Augustus De Morgan and his highly educated wife Sophia Elizabeth Frend, De Morgan was supported in his desire to become an artist. At the age of twenty, he entered the Royal Academy schools, but he was swiftly disillusioned with the establishment. Then he met Morris and through him the Pre-Raphaelite circle. Soon De Morgan began experimenting with stained glass, ventured ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evelyn De Morgan
Evelyn De Morgan (30 August 1855 – 2 May 1919) was an English painter associated early in her career with the later phase of the Pre-Raphaelite Movement, and working in a range of styles including Aestheticism and Symbolism. Her paintings are figural, foregrounding the female body through the use of spiritual, mythological, and allegorical themes. They rely on a range of metaphors (such as light and darkness, transformation, and bondage) to express what several scholars have identified as spiritualist and feminist content. Her later works also dealt with the themes of war from a pacifist perspective, engaging with conflicts such as the Second Boer War and World War I. Early life She was born Mary Evelyn Pickering at 6 Grosvenor Street in London, England, to Percival Pickering QC, the Recorder of Pontefract, and Anna Maria Wilhelmina Spencer Stanhope, daughter of John Spencer Stanhope and grand daughter of Thomas Coke, 1st Earl of Leicester. She was the eldest of four chi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
