# Ẹyọ tíkòsí

Lọ sí: atọ́ka, àwárí
i in the complex or cartesian plane; real numbers fall on the horizontal axis, and imaginary numbers fall on the vertical axis
Àwọn nọ́mbà nínú ìmọ̀ mathematiki
Basic
$\mathbb{N}\sub\mathbb{Z}\sub\mathbb{Q}\sub\mathbb{R}\sub\mathbb{C}$

Nọ́mbà àdábáyé $\mathbb{N}$
Nọ́mbà alòdì
Nọ́mbà odidi $\mathbb{Z}$
Nọ́mbà oníìpín $\mathbb{Q}$
Nọ́mbà aláìníìpín
Nọ́mbà gidi $\mathbb{R}$
Nọ́mbà tíkòsí $\mathbb{I}$
Nọ́mbà tóṣòro $\mathbb{C}$
Nomba aljebra $\mathbb{A}$
Nọ́mbà tíkòlónkà

Complex extensions

Quaternions $\mathbb{H}$
Octonions $\mathbb{O}$
Sedenions $\mathbb{S}$
Cayley-Dickson construction
Split-complex numbers $\mathbb{R}^{1,1}$
Bicomplex numbers
Biquaternions
Coquaternions
Tessarines
Hypercomplex numbers

Other extensions
Other

Nominal numbers
Serial numbers
Ordinal numbers
Cardinal numbers
Nomba akoko
Constructible numbers
Computable numbers
Integer sequences
Mathematical constants
Large numbers
π = 3.141592654…
e = 2.718281828…
i (Imaginary unit) $i^2 = -1$
∞ (infinity)

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Ninu mathimatiki, ẹyọ tíkòsí (imaginary unit) n fun sistemu nomba gidi $\mathbb{R}$ laye lati fe de sistemu nomba sisoro $\mathbb{C}$ . O se ko sile pelu i tabi j tabi leta Greek iota.