∅ ∈ ∩ ∪ ∉ ∋ ∌ ⊆ ⊂ ⊇ ⊃ ⊄ ⊅ ∩̸ ∪̸ × ∆ A = { x∈ℕ / ≤ x ≤ } ℕ ℙ ℚ ℝ ℤ ℂ

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+ ∖ / ∨ ∧ ∀ ∃ ∄ ¬ × ≠ √ ∛ ∜ ∟ ∠ ∡ ⊥ ∥ ∦ ≅ ≆ < x < < x ≤ ≤ x < ≤ x ≤

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A B C D E F α β γ δ φ π

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0 1 2 3 4 5 6 7 8 9
+ - · ÷ ^ = < ≤ > ≥ 0
x x² x³ ⁿ y z ² ³ ² ³ ₒ ₁ a b c
() [] {} 𝑥̅̅=[,,] v̅̅=[,,] a̅̅=[,,] F̅̅₁=[,,] F̅̅₂=[,,]

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