HTML支持的數(shù)字符號

V

for dll

&foralI;

?

d

part

?

?

3

exists

&exists;

?

0

empty

?

?

V

ndbld

&nobla;

?

￡

isin

∈

∈

€

notin

?

?

3

ni

?

?

n

prod

∏

∏

sum

∑

∑:

一

minus

?

?

*

lowdst

?

?

V

square root

√

√

OC

proportional to

∝

∝

00

infinity

∞

∞

L

angle

&t>ng;

∠

A

and

&cind;

∧

V

or

∨

∨

n

cap

∩

∩

u

cup

∪

∪

/

integral

∫

∫

therefore

∴

∴

simular to

～

～

=

approximately equal

?

?

almost equal

Sdasymp;

≈

not equal

≠

≠

=

equivalent

≡

≡:

(

less or equal

≤

≤

&

greater or equal

≥

≥