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Andrea Di Bartolo
Andrea di Bartolo or Andrea di Bartolo Cini (1360/70 – 1428) was an Italian painter, stained glass designer and illuminator of the Sienese School mainly known for his religious subjects. He was active between 1389–1428 in the area in and around Siena.Federico Zeri, with the assistance of Elizabeth E. Gardner, ''Italian Paintings: Sienese and Central Italian Schools'' A Catalogue of the Collection of The Metropolitan Museum of Art, The Metropolitan Museum of Art, 1980, p. 1-2Colum Hourihane, ''The Grove Encyclopedia of Medieval Art and Architecture, Volume 2'', Oxford University Press USA, 6 Dec 2012, p. 96-98 Biography Andrea di Bartolo was th ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
6 Andrea Di Bartolo
6 (six) is the natural number following 5 and preceding 7. It is a composite number and the smallest perfect number. In mathematics Six is the smallest positive integer which is neither a square number nor a prime number; it is the second smallest composite number, behind 4; its proper divisors are , and . Since 6 equals the sum of its proper divisors, it is a perfect number; 6 is the smallest of the perfect numbers. It is also the smallest Granville number, or \mathcal-perfect number. As a perfect number: *6 is related to the Mersenne prime 3, since . (The next perfect number is 28.) *6 is the only even perfect number that is not the sum of successive odd cubes. *6 is the root of the 6-aliquot tree, and is itself the aliquot sum of only one other number; the square number, . Six is the only number that is both the sum and the product of three consecutive positive numbers. Unrelated to 6's being a perfect number, a Golomb ruler of length 6 is a "perfect ruler". Six is a con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
