数学符号

Mathematical Symbol

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