An irrational number is a real number that cannot be written as a fraction. Irrational numbers have decimal expansions that neither terminate nor become periodic.
algebraic integer | algebraic number | almost integer | continuum | decimal expansion | Dirichlet function | e | Ferguson-Forcade algorithm | Gelfond's theorem | Hurwitz's irrational number theorem | near noble number | noble number | pi | Pythagoras's constant | Pythagoras's theorem | q-harmonic series | quadratic surd | rational number | regular number | repeating decimal | Segre's theorem | transcendental number
middle school level (California grade 7 standard)
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