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A primitive Pythagorean triple is one in which a, b and c are coprime (that is, they have no common divisor larger than 1). [1] For example, (3, 4, 5) is a primitive Pythagorean triple whereas (6, 8, 10) is not. Every Pythagorean triple can be scaled to a unique primitive Pythagorean triple by dividing (a, b, c) by their greatest common divisor ...
Wade and Wade [17] first introduced the categorization of Pythagorean triples by their height, defined as c − b, linking 3,4,5 to 5,12,13 and 7,24,25 and so on. McCullough and Wade [18] extended this approach, which produces all Pythagorean triples when k > h √ 2 /d: Write a positive integer h as pq 2 with p square-free and q positive.
This approach relies on the standard formula for generating any primitive Pythagorean triple from a half-angle tangent. Specifically one writes t = n / m = b / (a + c), where t is the tangent of half of the interior angle that is opposite to the side of length b. The root node of the tree is t = 1/2, which is for the primitive Pythagorean ...
Plimpton 322 is a Babylonian clay tablet, believed to have been written around 1800 BC, that contains a mathematical table written in cuneiform script.Each row of the table relates to a Pythagorean triple, that is, a triple of integers (,,) that satisfies the Pythagorean theorem, + =, the rule that equates the sum of the squares of the legs of a right triangle to the square of the hypotenuse.
[4] [6] The first three of these define the primitive Pythagorean triples (the ones in which the two sides and hypotenuse have no common factor), derive the standard formula for generating all primitive Pythagorean triples, compute the inradius of Pythagorean triangles, and construct all triangles with sides of length at most 100. [6]
The Plimpton 322 tablet records Pythagorean triples from Babylonian times. [2] Animation demonstrating the simplest Pythagorean triple, 3 2 + 4 2 = 5 2 Bust of Pythagoras, Musei Capitolini, Rome. Pythagoras was already well known in ancient times for his supposed mathematical achievement of the Pythagorean theorem. [3]
Dante Alighieri was fascinated by Pythagorean numerology [306] and based his descriptions of Hell, Purgatory, and Heaven on Pythagorean numbers. [306] Dante wrote that Pythagoras saw Unity as Good and Plurality as Evil [ 307 ] and, in Paradiso XV, 56–57, he declares: "five and six, if understood, ray forth from unity". [ 308 ]
The Pythagorean triple (4,3,5) is associated to the rational point (4/5,3/5) on the unit circle. In mathematics, the rational points on the unit circle are those points (x, y) such that both x and y are rational numbers ("fractions") and satisfy x 2 + y 2 = 1. The set of such points turns out to be closely related to primitive Pythagorean triples.