### 邏輯與集合論 (Logic & Set Theory)
∀ ∃ ∄ ∴ ∵
∈ ∉ ⊆ ⊂ ⊃ ⊈ ⊄ 
⋂ ∩ ⋃ ∪ ∅ 
¬ ∨ ∧ ⇒ ⇔ ≡ ≠ ≈ 
∀ (For all)  ∃ (Exists)  ∅ (Empty set)

### 運算子與微積分 (Operators & Calculus)
∑ Π √ ∫ ∂ ∇ Δ δ
+ - × ÷ ± ∓ ⊕ ⊗ 
∞ (Infinity)  ° (Degree)  ∠ (Angle)
⊥ (Perpendicular)  || (Parallel)

### 箭頭 (Arrows)
← → ↑ ↓ ↔ 
↖ ↗ ↘ ↙ 
⇐ ⇒ ⇔ 
↦ 

### 希臘字母 (Greek Letters - Common in Math)
α β γ δ ε ζ η θ λ μ ξ π ρ σ τ φ ψ ω
Γ Δ Θ Λ Ξ Π Σ Φ Ψ Ω

### 上標 (Superscripts - Unicode Supported)
⁰ ¹ ² ³ ⁴ ⁵ ⁶ ⁷ ⁸ ⁹ ⁺ ⁻ ⁼ ⁽ ⁾ ⁿ
ᵃ ᵇ ᶜ ᵈ ᵉ ᶠ ᵍ ʰ ⁱ ʲ ᵏ ˡ ᵐ ⁿ ᵒ ᵖ ʳ ˢ ᵗ ᵘ ᵛ ʷ ˣ ʸ ᶻ 
(註：Unicode 未支援上標 q)

### 下標 (Subscripts - Unicode Supported)
Unicode 2080..2089
₀ ₁ ₂ ₃ ₄ ₅ ₆ ₇ ₈ ₉ ₊ ₋ ₌ ₍ ₎
ₐ ₑ ₕ ᵢ ⱼ ₖ ₗ ₘ ₙ ₒ ₚ ᵣ ₛ ₜ ᵤ ᵥ ₓ
(註：Unicode 嚴重缺乏下標字母，b, c, d, f, g, q, w, y, z 皆無標準編碼)