Template:數

${\displaystyle \mathbb {N} \subseteq \mathbb {Z} \subseteq \mathbb {Q} \subseteq \mathbb {R} \subseteq \mathbb {C} }$

圓周率 ${\displaystyle \pi =3.14159265}$…
自然對數的底 ${\displaystyle e=2.718281828}$…
虛數單位 ${\displaystyle i={\sqrt {-{1}}}}$
無限大 ${\displaystyle \infty }$