OverscriptBox[Q, _]

The notation Q^_ denotes the algebraic closure of the rational numbers Q. This is equivalent to the set of algebraic numbers, sometimes denoted A.

See also

Algebraic Number, Algebraics, Q

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Nesterenko, Yu. V. A Course on Algebraic Independence: Lectures at IHP 1999. Unpublished manuscript. 1999.

Cite this as:

Weisstein, Eric W. "OverscriptBox[Q, _]." From MathWorld--A Wolfram Web Resource.

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