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1
four-square
four-square, a. (adv.), and n. [f. four a. + square.] A. adj. Having four equal sides; square.a 1300 Cursor M. 19843 A mikel linnen clath four squar Laten dun, him thoght was þar. 1470–85 Malory Arthur i. iii, There was sene in the chircheyard ayenst the hyghe aulter a grete stone four square. 1523 ... Oxford English Dictionary
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Four square (disambiguation)
Four square writing method American Foursquare, an architectural style Four Square (cigarette) See also Russian four square Four-square cipher Lagrange's four-square theorem, any natural number equals the sum of four integers squared Jacobi's four-square theorem giving the number of distinct wikipedia.org
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four-square
four-squareadj(a) square-shaped 方形的; 方的.(b) solidly based; steady or resolute 不动摇的; 坚定的; 坚决的; 果断的 a ,four-square ap`proach to the problem 对该问题的强硬态度. 牛津英汉双解词典
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Four-Square (Walk Through)
unique high Four-Square (Four Circles) (BH 416). References Four-Square (Walk Through), Tate Gallery Four-Square (Walk Through), barbarahepworth.org.uk Four-Square (Walk Through), Norton Simin Musum wikipedia.org
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Four Square (supermarket)
Four Square is a chain of supermarkets in New Zealand that was founded by John Heaton Barker. Some Four Square supermarkets previously operated in Australia under the name Friendly Grocer. wikipedia.org
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Is every integer a mixed sum of three squares? Lagrange's four-square theorem states that every natural number can be represented as the sum of four integer squares $n = a^2 + b^2 + c^2 + d^2$. _Question_ : Is every...
You can write every number $n$ in the form $a^2+b^2-c^2$. Just pick $a$ so that $n-a^2$ is odd and then solve $$\begin{align} b+c&=n-a^2\\\ b-c&=1 \end{align}$$ for $b$ and $c$: $$\begin{align} b&={n-a^2+1\over2}\\\ c&={n-a^2-1\over2} \end{align}$$
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Four-square cipher
Using four-square The four-square cipher uses four 5 by 5 (5x5) matrices arranged in a square. four-square ciphertext. wikipedia.org
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Is this version of Lagrange's four-square theorem true? Lagrange's four-square theorem states that any natural number $n$ can be represented as the sum of four integer squares.i.e. $n = a_1\times a_1 + a_2\times a_2 +...
The answer is indeed negative. As a simple proof, fix $k$ and consider the numbers from $1$ to $(2k)^{2k}$. Any $a_i$ in the representation of a number in this range must be at most $2k$. Therefore, there are at most $(2k+1)^{k}$ numbers $n$ in this range which can be represented as a sum $n=a_1^{a_...
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A Man Four-Square
A Man Four-Square is a lost 1926 American silent Western film directed by Roy William Neill and starring Buck Jones, Marion Harlan and Harry Woods. wikipedia.org
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Four Square (Smithfield, Virginia)
Four Square is a historic home and farm located near Smithfield, Isle of Wight County, Virginia. wikipedia.org
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四方街邮局 Four Square Post Office, 29 Four Square St., Heqing County
A comprehensive contact information for the 四方街邮局 Four Square Post Office in Shanghai, China with phone number, address, email, services and working hours.
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Four Square Jane
Four Square Jane is a 1929 thriller novel by the British writer Edgar Wallace. The Weekly News, January 31, 1920 "The End" published in The Weekly News, February 7, 1920 Adaptation In 1961 it was turned into the film The Fourth Square wikipedia.org
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Russian four square
Russian four square was started in the Soviet Union. It is a variation of the Russian game Квадрат (square). General information Game requirements To play Russian four square, you need: a ball 4 or more people a flat surface (divided into four squares) Goal wikipedia.org
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Four Square Mile, Colorado
The name is derived from the four square miles bounded by Quebec Street, Mississippi Avenue, Havana Street and Yale Avenue. Geography The Four Square Mile CDP has an area of , all land. wikipedia.org
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Jacobi's four-square theorem
In number theory, Jacobi's four-square theorem gives a formula for the number of ways that a given positive integer can be represented as the sum of four See also Lagrange's four-square theorem Lambert series Sum of squares function Notes References External links Squares in number theory Theorems wikipedia.org
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