Linked from

The 69 pages that link to Rational number, each with the reason it gives.

• Egyptian fractionNarrower topic: Every positive rational number admits an Egyptian fraction representation.

• Even numberCompared with: Divisibility by 2 defines evenness for integers, not for rational numbers.

• Inverse Galois problemRelated: The best-known version asks whether every finite group occurs over this field.

• Number lineBroader topic: Fractions mark positions between integer tick marks.

• Lowest termsNarrower topic: Different fractions in lowest terms can represent the same rational number only when their signs are handled consistently.

• Repeating decimalNarrower topic: Every repeating decimal is rational, and every rational number has an eventually repeating decimal expansion.

• Division by zeroRelated: The standard definition of rational numbers rules out zero denominators at its foundation.

• Number (mathematics)Broader topic: Rational numbers add fractions and exact quotients to the number systems.

• Nth rootRelated: A rational radicand can have an irrational root, as with the square root of two.

• Erdős–Straus conjectureNarrower topic: Both sides of every proposed identity are rational numbers.

• Square root of 2Compared with: No fraction of integers equals square root of 2, although fractions can approximate it.

• Apéry's theoremCompared with: The proof assumes ζ(3) has this form, then derives a contradiction.

• Computable numberBroader topic: Exact rational outputs can serve as approximations to a computable real.

• Cantor–Dedekind axiomRelated: Rational coordinates alone leave gaps that the axiom’s real coordinates fill.

• Kuratowski's closure-complement problemRelated: Their density in the real line makes them a useful starting subset for closure examples.

• Niven's theoremNarrower topic: The theorem’s decisive hypothesis is that the sine lies in this number system.

• Proof that π is irrationalCompared with: Rational numbers have eventually repeating decimal expansions, unlike π.

• Von Staudt–Clausen theoremNarrower topic: Bernoulli numbers are rational, so their reduced denominators are defined.

• Wolstenholme's theoremNarrower topic: Reciprocals are rational numbers, and their p-adic divisibility is defined through prime valuations.