数学符号
Mathematical Symbol
Last updated
Mathematical Symbol
Last updated
数学符号
英文读法
+
plus
-
minus
±
plus or minus
×
times / multiplied by
÷
divided by
=
equals / is equal to
≠
is not equal to
≡
is equivalent / identical to
≈
is approximately equal to
≌
is equal to or approximately equal to
<
is less / smaller than
>
is greater / more than
≮
is not less / smaller than
≯
is not greater / more than
≤
is less (than) or equal to
≥
is greater (than) or equal to
%
per cent
‰
per mill
.
decimal point
,
thousand's separator
∞
infinity
√
square root
∫
the integral of
∑
the summation of (sigma)
Π
the product of (pi)
log
log / logarithm
n!
factorial
∪
the union set of
∩
the intersection of
∝
is proportional to
∵
since / because
∴
hence / therefore
°
degree
∠
angle
⌒
semicircle
⊙
circle
○
circumference
△
triangle
⊥
is perpendicular to
℃
degree Celsius / degree centigrade
℉
Fahrenheit [ˈfærənhaɪt]
上角标
superscript
下角标
subscript
向量
vector a