"The rationals" refers to the set of rational numbers and is commonly denoted .
Rationals
See also
Field of Rationals, Q, Rational NumberThis entry contributed by Rasmus Hedegaard
Explore with Wolfram|Alpha
References
Wolfram, S. A New Kind of Science. Champaign, IL: Wolfram Media, p. 1168, 2002.Cite this as:
Hedegaard, Rasmus. "Rationals." From MathWorld--A Wolfram Web Resource, created by Eric W. Weisstein. https://mathworld.wolfram.com/Rationals.html