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Print/export Download as PDF; Printable version; ... A perfect square is an element of algebraic structure that is equal to the square of another element. Square ...
Squares of odd numbers are odd, and are congruent to 1 modulo 8, since (2n + 1) 2 = 4n(n + 1) + 1, and n(n + 1) is always even. In other words, all odd square numbers have a remainder of 1 when divided by 8. Every odd perfect square is a centered octagonal number. The difference between any two odd perfect squares is a multiple of 8.
A magic square is in the Frénicle standard form, named for Bernard Frénicle de Bessy, if the following two conditions hold: . the element at position [1,1] (top left corner) is the smallest of the four corner elements; and
The square of an integer may also be called a square number or a perfect square. In algebra, the operation of squaring is often generalized to polynomials, other expressions, or values in systems of mathematical values other than the numbers. For instance, the square of the linear polynomial x + 1 is the quadratic polynomial (x + 1) 2 = x 2 ...
Smith diagram of a rectangle. A "perfect" squared square is a square such that each of the smaller squares has a different size. Perfect squared squares were studied by R. L. Brooks, C. A. B. Smith, A. H. Stone and W. T. Tutte (writing under the collective pseudonym "Blanche Descartes") at Cambridge University between 1936 and 1938.
Robert Sacks devised a variant of the Ulam spiral in 1994. In the Sacks spiral, the non-negative integers are plotted on an Archimedean spiral rather than the square spiral used by Ulam, and are spaced so that one perfect square occurs in each full rotation. (In the Ulam spiral, two squares occur in each rotation.)
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y 2 = x 3 + 1, with solutions at (-1, 0), (0, 1) and (0, -1). In algebra, a Mordell curve is an elliptic curve of the form y 2 = x 3 + n, where n is a fixed non-zero integer. [1]These curves were closely studied by Louis Mordell, [2] from the point of view of determining their integer points.