The algebraics, sometimes denoted 
(Derbyshire 2004, p. 173), are the set of algebraic
numbers. The set of algebraic numbers is implemented in the Wolfram
Language as Algebraics,
and a number 
can then be tested to see if it is algebraic using the command Element[x,
Algebraics].
Algebraics
See also
Algebraic NumberExplore with Wolfram|Alpha
References
Derbyshire, J. Prime Obsession: Bernhard Riemann and the Greatest Unsolved Problem in Mathematics. New York: Penguin, 2004.Referenced on Wolfram|Alpha
AlgebraicsCite this as:
Weisstein, Eric W. "Algebraics." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Algebraics.html