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AlgebraicNumberDenominator

AlgebraicNumberDenominator[a]
gives the smallest positive integer n such that is an algebraic integer.
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Radical expressions:
Root and AlgebraicNumber objects:
AlgebraicNumberDenominator automatically threads over lists:
Representation of as a quotient of an algebraic integer and an integer n:
For an algebraic integer n, the denominator is 1:
Multiplying an algebraic number by its denominator gives an algebraic integer:
The argument must be an algebraic number:
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