Difference between revisions of "Algebraic numbers"
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The set of Algebraic Numbers is countably [[infinite]]. This follows from the fact that the set of finite degree polynomials with integer coefficients is countably [[infinite]]. | The set of Algebraic Numbers is countably [[infinite]]. This follows from the fact that the set of finite degree polynomials with integer coefficients is countably [[infinite]]. | ||
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Revision as of 04:14, December 29, 2007
Algebraic Numbers, are real numbers which are roots of some finite degree polynomial with integer coefficients. Examples of Algebraic Numbers are 2, 1/3, and <math>\sqrt{2}</math>.
In contrast, transcendental numbers are real numbers which are not roots of any finite degree polynomial with integer coefficients. The most well-known transcendental numbers are e and <math>\pi</math>.
The set of Algebraic Numbers is countably infinite. This follows from the fact that the set of finite degree polynomials with integer coefficients is countably infinite.