本章节我们整列一份 HTML 符号实体参考手册
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
千万注意，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 |
| 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 |
| 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 |
| 字符 |
实体编号 |
实体名称 |
描述 |
| 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 |
| Π|
Π|
Π|
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 |