HTML 符号实体参考手册
HTML 符号实体
本字符实体参考手册包括了数学符号、希腊字符、各种箭头记号、科技符号以及形状。
注释： 实体名称对大小写敏感。
HTML 支持的数学符号
字符
实体编号
实体名称
描述
∀
∀
∀
for all
∂
∂
∂
part
∃
∃
∃
exists
∅
∅
∅
empty
∇
∇
∇
nabla
∈
∈
∈
isin
∉
∉
∉
notin
∋
∋
∋
ni
∏
∏
∏
prod
∑
∑
∑
sum
−
−
−
minus
∗
∗
∗
lowast
√
√
√
square root
∝
∝
∝
proportional to
∞
∞
∞
infinity
∠
∠
∠
angle
∧
∧
∧
and
∨
∨
∨
or
∩
∩
∩
cap
∪
∪
∪
cup
∫
∫
∫
integral
∴
∴
∴
therefore
∼
∼
∼
similar to
≅
≅
≅
congruent to
≈
≈
≈
almost equal
≠
≠
≠
not equal
≡
≡
≡
equivalent
≤
≤
≤
less or equal
≥
≥
≥
greater or equal
⊂
⊂
⊂
subset of
⊃
⊃
⊃
superset of
⊄
⊄
⊄
not subset of
⊆
⊆
⊆
subset or equal
⊇
⊇
⊇
superset or equal
⊕
⊕
⊕
circled plus
⊗
⊗
⊗
circled times
⊥
⊥
⊥
perpendicular
⋅
⋅
⋅
dot operator
HTML 支持的希腊字母
字符
实体编号
实体名称
描述
Α
Α
Α
Alpha
Β
Β
Β
Beta
Γ
Γ
Γ
Gamma
Δ
Δ
Δ
Delta
Ε
Ε
Ε
Epsilon
Ζ
Ζ
Ζ
Zeta
Η
Η
Η
Eta
Θ
Θ
Θ
Theta
Ι
Ι
Ι
Iota
Κ
Κ
Κ
Kappa
Λ
Λ
Λ
Lambda
Μ
Μ
Μ
Mu
Ν
Ν
Ν
Nu
Ξ
Ξ
Ξ
Xi
Ο
Ο
Ο
Omicron
Π
Π
Π
Pi
Ρ
Ρ
Ρ
Rho
undefined
Sigmaf
Σ
Σ
Σ
Sigma
Τ
Τ
Τ
Tau
Υ
Υ
Υ
Upsilon
Φ
Φ
Φ
Phi
Χ
Χ
Χ
Chi
Ψ
Ψ
Ψ
Psi
Ω
Ω
Ω
Omega
α
α
α
alpha
β
β
β
beta
γ
γ
γ
gamma
δ
δ
δ
delta
ε
ε
ε
epsilon
ζ
ζ
ζ
zeta
η
η
η
eta
θ
θ
θ
theta
ι
ι
ι
iota
κ
κ
κ
kappa
λ
λ
λ
lambda
μ
μ
μ
mu
ν
ν
ν
nu
ξ
ξ
ξ
xi
ο
ο
ο
omicron
π
π
π
pi
ρ
ρ
ρ
rho
ς
ς
ς
sigmaf
σ
σ
σ
sigma
τ
τ
τ
tau
υ
υ
υ
upsilon
φ
φ
φ
phi
χ
χ
χ
chi
ψ
ψ
ψ
psi
ω
ω
ω
omega
ϑ
ϑ
ϑ
theta symbol
ϒ
ϒ
ϒ
upsilon symbol
ϖ
ϖ
ϖ
pi symbol
HTML 支持的其他实体
字符
实体编号
实体名称
描述
Œ
Œ
Œ
capital ligature OE
œ
œ
œ
small ligature oe
Š
Š
Š
capital S with caron
š
š
š
small S with caron
Ÿ
Ÿ
Ÿ
capital Y with diaeres
ƒ
ƒ
ƒ
f with hook
ˆ
ˆ
ˆ
modifier letter circumflex accent
˜
˜
˜
small tilde
en space
em space
thin space
zero width non-joiner
zero width joiner
left-to-right mark
right-to-left mark
–
–
–
en dash
—
—
—
em dash
'
‘
‘
left single quotation mark
'
’
’
right single quotation mark
‚
‚
‚
single low-9 quotation mark
"
“
“
left double quotation mark
"
”
”
right double quotation mark
„
„
„
double low-9 quotation mark
†
†
†
dagger
‡
‡
‡
double dagger
•
•
•
bullet
…
…
…
horizontal ellipsis
‰
‰
‰
per mille
′
′
′
minutes
″
″
″
seconds
‹
‹
‹
single left angle quotation
›
›
›
single right angle quotation
‾
‾
‾
overline
€
€
€
euro
™
™ or ™
™
trademark
←
←
←
left arrow
↑
↑
↑
up arrow
→
→
→
right arrow
↓
↓
↓
down arrow
↔
↔
↔
left right arrow
↵
↵
↵
carriage return arrow
⌈
⌈
⌈
left ceiling
⌉
⌉
⌉
right ceiling
⌊
⌊
⌊
left floor
⌋
⌋
⌋
right floor
◊
◊
◊
lozenge
♠
♠
♠
spade
♣
♣
♣
club
♥
♥
♥
heart
♦
♦
♦
diamond