√ ∫ + - ± = ≠ ≃ ≈ ≤ ≥ ≲ ≳ ≴ ≵ ∞ ∀ ∃ ∄ ∈ ∉ ∅ ∧ ∨ ∩ ∪ ℂ ℝ ℚ ℕ ℤ → ↛ ⇒ ⇏ ⇐ ⇔ ⇎ ⟺ Superˣ ⁰ ¹ ² ³ ⁴ ⁵ ⁶ ⁷ ⁸ ⁹ ⁱ ⁺ ⁻ ⁼ ⁽ ⁾ ⁿ ᵃ ᵇ ᶜ ᵈ ᵉ ᶠ ᵍ ʰ ⁱ ʲ ᵏ ˡ ᵐ ⁿ ᵒ ᵖ 𐞥 ʳ ˢ ᵗ ᵘ ᵛ ʷ ˣ ʸ ᶻ Subₓ ₀ ₁ ₂ ₃ ₄ ₅ ₆ ₇ ₈ ₉ ₊ ₋ ₌ ₍ ₎ ₐ ₑ ₒ ₓ ₔ ₕ ₖ ₗ ₘ ₙ ₚ ₛ ₜ ₕ ᵢ ⱼ ₖ ₗ ₘ ₙ ₒ ₚ – ᵣ ₛ ₜ ᵤ ᵥ * ₓMore at Wikipedia