Template:Number systems

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v t e Number systems
Countable sets	Natural numbers ( $ℕ$ ) Integers ( $ℤ$ ) Rational numbers ( $ℚ$ ) Constructible numbers Algebraic numbers ( $𝔸$ ) Periods Computable numbers Definable real numbers Arithmetical numbers Gaussian integers
Division algebras	Real numbers ( $ℝ$ ) Complex numbers ( $ℂ$ ) Quaternions ( $ℍ$ ) Octonions ( $𝕆$ )
Split composition algebras	over $ℝ$ : Split-complex numbers Split-quaternions Split-octonions over $ℂ$ : Bicomplex numbers Biquaternions Bioctonions
Other hypercomplex	Dual numbers Dual quaternions Hyperbolic quaternions Sedenions ( $𝕊$ ) Split-biquaternions Multicomplex numbers
Other types	Cardinal numbers Irrational numbers Fuzzy numbers Hyperreal numbers Levi-Civita field Surreal numbers Transcendental numbers Ordinal numbers p-adic numbers Supernatural numbers Superreal numbers
Classification List Numbers portal