± × ÷ * ∞ ∑ ∏ ∫ ∮ d⁄dx ∂⁄∂x dn⁄dxn ∂n⁄∂xn √ n√ ½ log ln sin cos tan csc sec cot asin acos atan acsc asec acot ≤ ≥ ≠ ≈ ≡ ∀ ∧ ∨ ∃ ∄ ∈ ∉ ⊂ ⊃ ⊆ ⊇ ∩ ∪ ¬ ℜ ℑ ℂ ℕ ℤ ℙ ℚ H ⋈ ∅ ♢ ▵ → ← ↑ ↓ ↔ ↕ ⇒ ⇐ ⇑ ⇓ ⇔ ⇕ ↖ ↗ ↙ ↘ ∠ ⊥ ∇ ∂ ℓ ℏ * ∴ ∵ ⊥ ° ∘ ⋅ ⋮ ⋅⋅⋅ ⋅⋅⋅ ⋱ ∥ ∦ | ∝ ⌊ ⌋ ⌈ ⌉ α β γ δ ε ζ η θ ι κ λ μ ν ξ ο π ρ σ τ υ ɸ χ ψ ω