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Mathematics is the study of representing and reasoning about abstract objects (such as numbers, points, spaces, sets, structures, and games). Mathematics is used throughout the world as an essential tool in many fields, including natural science, engineering, medicine, and the social sciences. Applied mathematics, the branch of mathematics concerned with application of mathematical knowledge to other fields, inspires and makes use of new mathematical discoveries and sometimes leads to the development of entirely new mathematical disciplines, such as statistics and game theory. Mathematicians also engage in pure mathematics, or mathematics for its own sake, without having any application in mind. There is no clear line separating pure and applied mathematics, and practical applications for what began as pure mathematics are often discovered. ( Full article...)
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Did you know (autogenerated) 
 ... that mathematician Gunilla Kreiss, the daughter of HeinzOtto Kreiss, later became his granddaughter?
 ... that before becoming a professional mathematician, Chikako Mese was a recordbreaking high school softball player?
 ... that juggling patterns can be encoded in terms of a mathematical object called the affine symmetric group?
 ... that 100 years after Mary Emily Sinclair wrote a master's thesis in mathematics on the discriminants of quintic polynomials, Helaman Ferguson based a sculpture on her work?
 ... that Derby County F.C. chairman Sam Longson gave impromptu press conferences in his pyjamas in the aftermath of Brian Clough's resignation as manager?
 ... that some philosophers of mathematics believe that the life cycle of a species of cicadas is a good argument for the existence of numbers?
 ... that the mathematical infinity symbol ∞ may be derived from the Roman numerals for 1000 or for 100 million?
 ... that the number of cannonballs in a square pyramid with cannonballs along each edge is ?
More did you know –
 ...that 253931039382791 and the following 18 prime numbers all end in the digit 1?
 ...that the Electronic Frontier Foundation funds awards for the discovery of prime numbers beyond certain sizes?
 ...that pi can be computed using only the number 2 by the work of Viète?
 … that the Riemann Hypothesis, one of the Millennium Problems, depends on the asymptotic growth of the Mertens Function?
 … that every positive integer can be written as the sum of three palindromic numbers in every number system with base 5 or greater?
 … that the best known lower bound for the length of the smallest superpermutation was first posted anonymously to the internet imageboard 4chan?
 ...that the mathematician Grigori Perelman was offered a Fields Medal in 2006, in part for his proof of the Poincaré conjecture, which he declined?
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frontispiece of Sir Henry Billingsley's first English version of Euclid's Elements, 1570 Image credit: 
Euclid's Elements ( Greek: Στοιχεῖα) is a mathematical and geometric treatise, consisting of 13 books, written by the Hellenistic mathematician Euclid in Egypt during the early 3rd century BC. It comprises a collection of definitions, postulates ( axioms), propositions ( theorems) and proofs thereof. Euclid's books are in the fields of Euclidean geometry, as well as the ancient Greek version of number theory. The Elements is one of the oldest extant axiomatic deductive treatments of geometry, and has proven instrumental in the development of logic and modern science.
It is considered one of the most successful textbooks ever written: the Elements was one of the very first books to go to press, and is second only to the Bible in number of editions published (well over 1000). For centuries, when the quadrivium was included in the curriculum of all university students, knowledge of at least part of Euclid's Elements was required of all students. Not until the 20th century did it cease to be considered something all educated people had read. It is still (though rarely) used as a basic introduction to geometry today. ( Full article...)
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