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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, Huisseau-sur-Cosson, Loir-et-Cher – 14 June 1924) was a French people, French mining engineer, geologist, and archaeologist. He was the director of antiquities in Khedivate of Egypt, Egypt during the 19th ... (1857–1924), French archaeologist. {{surname ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Morgan's Laws
In 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 valid rules of inference. They are named after Augustus De Morgan, a 19th-century British mathematician. The rules allow the expression of conjunctions and disjunctions purely in terms of each other via negation. The rules can be expressed in English as: * The negation of a disjunction is the conjunction of the negations * The negation of a conjunction is the disjunction of the negations or * The 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'' one of A or B rather than an "exclusive or" that means ''exactly'' one of A or B. In set theory and Boolean algebra, these ... [...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. The medal is awarded every third year (in years divisible by 3) to a mathematician who is normally resident in the United Kingdom on 1 January of the relevant year. The only grounds for the award of the medal are the candidate's contributions to mathematics. 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: LMS website, accessed July 2011 See also * |
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), née Pickering, 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. De Morgan boycotted the Royal Academy and signed the Declaration in Favour of Women's Suffrage in 1889. Her later works also deal with the themes of war from a pacifist perspective, engaging with conflicts like the Second Boer War and World War I. Early life She was born Mary Evelyn Pickering at 6 Grosvenor Street, to Percival Pickering QC, the Recorder of Pontefract, and Anna Maria Wilhelmina Spencer Stanhope, the sister of the art ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
