Euclidean Number
المؤلف:
Conway, J. H. and Guy, R. K
المصدر:
"Three Greek Problems." In The Book of Numbers. New York: Springer-Verlag
الجزء والصفحة:
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1-1-2021
1000
Euclidean Number
A Euclidean number is a number which can be obtained by repeatedly solving the quadratic equation. Euclidean numbers, together with the rational numbers, can be constructed using classical geometric constructions. However, the cases for which the values of the trigonometric functions sine, cosine, tangent, etc., can be written in closed form involving square roots of real numbers are much more restricted.
REFERENCES:
Conway, J. H. and Guy, R. K. "Three Greek Problems." In The Book of Numbers. New York: Springer-Verlag, pp. 192-194, 1996.
Klein, F. "Algebraic Equations Solvable by Square Roots." Part I, Ch. 1 in "Famous Problems of Elementary Geometry: The Duplication of the Cube, the Trisection of the Angle, and the Quadrature of the Circle." In Famous Problems and Other Monographs. New York: Chelsea, pp. 5-12, 1980.
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