HTML支持的数字符号

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

≥

≥