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Henry Dudeney
Henry Ernest Dudeney (10 April 1857 – 23 April 1930) was an English author and mathematician who specialised in logic puzzles and mathematical games. He is known as one of the country's foremost creators of mathematical puzzles. Early life Dudeney was born in the village of Mayfield, East Sussex, England, one of six children of Gilbert and Lucy Dudeney. His grandfather, John Dudeney, was well known as a self-taught mathematician and shepherd; his initiative was much admired by his grandson. Dudeney learned to play chess at an early age, and continued to play frequently throughout his life. This led to a marked interest in mathematics and the composition of puzzles. Chess problems in particular fascinated him during his early years. Career Although Dudeney spent his career in the Civil Service, he continued to devise various problems and puzzles. Dudeney's first puzzle contributions were submissions to newspapers and magazines, often under the pseudonym of "Sphinx." Much of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mayfield, East Sussex
Mayfield and Five Ashes is a civil parish in the High Weald of East Sussex, England. The two villages making up the principal part of the parish lie on the A267 road between Royal Tunbridge Wells and Eastbourne: Mayfield, the larger of the two villages is ten miles (16 km) south of Royal Tunbridge Wells; with Five Ashes being 2.5 miles (4 km) further south. Mayfield village Every September the village hosts its annual carnival. This is to commemorate the Protestants being condemned here on 23 September 1556, and being burnt at the stake in Lewes. The festival is part of the Sussex bonfire tradition of marking the discovery of the Gunpowder Plot. The procession marches through the village by torchlight on the third Saturday in September, climaxing with a firework display in the recreation ground. The money raised through the street collection is spent on charities. Governance Mayfield and Five Ashes Civil Parish falls within the electoral ward simply called ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital Root
The digital root (also repeated digital sum) of a natural number in a given radix is the (single digit) value obtained by an iterative process of summing digits, on each iteration using the result from the previous iteration to compute a digit sum. The process continues until a single-digit number is reached. For example, in base 10, the digital root of the number 12345 is 6 because the sum of the digits in the number is 1 + 2 + 3 + 4 + 5 = 15, then the addition process is repeated again for the resulting number 15, so that the sum of 1 + 5 equals 6, which is the digital root of that number. In base 10, this is equivalent to taking the remainder upon division by 9 (except when the digital root is 9, where the remainder upon division by 9 will be 0), which allows it to be used as a divisibility rule. Formal definition Let n be a natural number. For base b > 1, we define the digit sum F_ : \mathbb \rightarrow \mathbb to be the following: :F_(n) = \sum_^ d_i where k = \lfloor \log_ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
English Chess Players
English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national identity, an identity and common culture ** English language in England, a variant of the English language spoken in England * English languages (other) * English studies, the study of English language and literature * ''English'', an Amish term for non-Amish, regardless of ethnicity Individuals * English (surname), a list of notable people with the surname ''English'' * People with the given name ** English McConnell (1882–1928), Irish footballer ** English Fisher (1928–2011), American boxing coach ** English Gardner (b. 1992), American track and field sprinter Places United States * English, Indiana, a town * English, Kentucky, an unincorporated community * English, Brazoria County, Texas, an unincorporated community * Engli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1930 Deaths
Year 193 ( CXCIII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Sosius and Ericius (or, less frequently, year 946 ''Ab urbe condita''). The denomination 193 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * January 1 – Year of the Five Emperors: The Roman Senate chooses Publius Helvius Pertinax, against his will, to succeed the late Commodus as Emperor. Pertinax is forced to reorganize the handling of finances, which were wrecked under Commodus, to reestablish discipline in the Roman army, and to suspend the food programs established by Trajan, provoking the ire of the Praetorian Guard. * March 28 – Pertinax is assassinated by members of the Praetorian Guard, who storm the imperial palace. The Empire is auctioned of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1857 Births
Events January–March * January 1 – The biggest Estonian newspaper, ''Postimees'', is established by Johann Voldemar Jannsen. * January 7 – The partly French-owned London General Omnibus Company begins operating. * January 9 – The 7.9 Fort Tejon earthquake shakes Central and Southern California, with a maximum Mercalli intensity of IX (''Violent''). * January 24 – The University of Calcutta is established in Calcutta, as the first multidisciplinary modern university in South Asia. The University of Bombay is also established in Bombay, British India, this year. * February 3 – The National Deaf Mute College (later renamed Gallaudet University) is established in Washington, D.C., becoming the first school for the advanced education of the deaf. * February 5 – The Federal Constitution of the United Mexican States is promulgated. * March – The Austrian garrison leaves Bucharest. * March 3 ** France and the United Kingdom for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dudeney Number
In number theory, a Dudeney number in a given number base b is a natural number equal to the perfect cube of another natural number such that the digit sum of the first natural number is equal to the second. The name derives from Henry Dudeney, who noted the existence of these numbers in one of his puzzles, ''Root Extraction'', where a professor in retirement at Colney Hatch postulates this as a general method for root extraction. Mathematical definition Let n be a natural number. We define the Dudeney function for base b > 1 and power p > 0 F_ : \mathbb \rightarrow \mathbb to be the following: :F_(n) = \sum_^ \frac where k = p\left(\lfloor \log_ \rfloor + 1\right) is the p times the number of digits in the number in base b. A natural number n is a Dudeney root if it is a fixed point for F_, which occurs if F_(n) = n. The natural number m = n^p is a generalised Dudeney number, and for p = 3, the numbers are known as Dudeney numbers. 0 and 1 are trivial Dudeney numbers for all ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Canterbury Puzzles
''The Canterbury Puzzles and Other Curious Problems'' is a 1907 mathematical puzzle book by Henry Dudeney. The first part of the book features a series of puzzles based on the characters from ''The Canterbury Tales'' by Geoffrey Chaucer. References External links * 1908 edition, E. P. Dutton, New York2002 Dover reprint 1907 books Gamebooks Works based on The Canterbury Tales {{game-book-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Fulleylove
John Fulleylove (18 Aug 1845 – 22 May 1908) was an English landscape artist and illustrator. Life Born in Leicester, he originally trained as an architect with local firm "Shenton and Baker", before becoming an artist in watercolours and oils. He exhibited widely in England from 1871 at venues in London such as the Royal Academy, Royal Society of British Artists, Fine Art Society, Royal Institute of Painters in Water Colours, Royal Institute of Oil Painters, and in many other regional towns and cities. He became a member of the RI in 1879 and the ROI in 1883. Abroad, he painted in France, Italy, Greece and the Middle East. His watercolour illustrations appeared in several travel books, such as those by A & C Black (see below). Fulleylove died on 22 May 1908 at his Hampstead home and was buried on the eastern side of Highgate Cemetery. Family In 1878, Fulleylove married fellow artist Elizabeth Elgood.Elizabeth Elgood came from a family of artists. She had seven brot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Hardy
Thomas Hardy (2 June 1840 – 11 January 1928) was an English novelist and poet. A Victorian realist in the tradition of George Eliot, he was influenced both in his novels and in his poetry by Romanticism, including the poetry of William Wordsworth. He was highly critical of much in Victorian society, especially on the declining status of rural people in Britain, such as those from his native South West England. While Hardy wrote poetry throughout his life and regarded himself primarily as a poet, his first collection was not published until 1898. Initially, he gained fame as the author of novels such as '' Far from the Madding Crowd'' (1874), ''The Mayor of Casterbridge'' (1886), '' Tess of the d'Urbervilles'' (1891), and ''Jude the Obscure'' (1895). During his lifetime, Hardy's poetry was acclaimed by younger poets (particularly the Georgians) who viewed him as a mentor. After his death his poems were lauded by Ezra Pound, W. H. Auden and Philip Larkin. Many of his novels ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harper's Magazine
''Harper's Magazine'' is a monthly magazine of literature, politics, culture, finance, and the arts. Launched in New York City in June 1850, it is the oldest continuously published monthly magazine in the U.S. (''Scientific American'' is older, but it did not become monthly until 1921). ''Harper's Magazine'' has won 22 National Magazine Awards. In the 19th and 20th centuries, the magazine published works of authors such as Herman Melville, Woodrow Wilson, and Winston Churchill. Willie Morris's resignation as editor in 1971 was considered a major event, and many other employees of the magazine resigned with him. The magazine has developed into the 21st century, adding several blogs. ''Harper's'' has been the subject of several controversies. History ''Harper's Magazine'' began as ''Harper's New Monthly Magazine'' in New York City in June 1850, by publisher Harper & Brothers. The company also founded the magazines ''Harper's Weekly'' and ''Harper's Bazaar'', and grew to become Ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alice Whiffin
Alice Louisa Dudeney (née Whiffin; 21 October 1866 – 21 November 1945) was an English author and short story writer. The wife of Henry Dudeney, a fellow author and inventor of mathematical puzzles and games, she used the style Mrs. Henry Dudeney for much of her literary career. She herself became a popular writer in her lifetime, who was often compared to Thomas Hardy for her portrayals of Sussex regional life.Barrow, Elizabeth N., ed. ''The Fortune of War: Being Portions of Many Letters and Journals Written to and for her Cousin Mistress Dorothea Engel of Carthmoor Hall, Northumberland, England''. New York: Henry Holt and Company, 1900.Cardinal, Agnès, Dorothy Goldman and Judith Hattaway. ''Women's Writing on the First World War''. Oxford: Oxford University Press, 1999. (pg. 290) She had over fifty volumes of fiction published between 1898 and 1937. Fiction Called "one of the most powerful writers of fiction among modern English women" by ''Putnam's Magazine'',"The Lounger. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathematical Games Column
Over a period of 24 years (January 1957 – December 1980), Martin Gardner wrote 288 consecutive monthly "Mathematical Games" columns for ''Scientific American'' magazine. During the next years, through June 1986, Gardner wrote 9 more columns, bringing his total to 297, as other authors wrote most of the "Mathematical Games" columns. The table below lists Gardner's columns. Twelve of Gardner's columns provided the cover art for that month's magazine, indicated by "over in the table with a hyperlink to the cover. Other articles by Gardner Gardner wrote 5 other articles for ''Scientific American''. His flexagon article in December 1956 was in all but name the first article in the series of ''Mathematical Games'' columns and led directly to the series which began the following month. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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