数学記号 
実体名 
コード 
備 考 
∀  ∀  ∀  for all

∂  ∂  ∂  partial differential

∃  ∃  ∃  there exists

∇  ∇  ∇  nabla = backward difference

∈  ∈  ∈  element of

∋  ∋  ∋  contains as member

∏  ∏  ∏  nary product = product sign

∑  ∑  ∑  nary sumation

−  −  −  minus sign

√  √  √  square root = radical sign

∝  ∝  ∝  proportional to

∞  ∞  ∞  infinity

∠  ∠  ∠  angle

∧  ∧  ∧  logical and = wedge

∨  ∨  ∨  logical or = vee

∩  ∩  ∩  intersection = cap

∪  ∪  ∪  union = cup

∫  ∫  ∫  integral

∴  ∴  ∴  therefore

≈  ≈  ≈  almost equal to = asymptotic to

≠  ≠  ≠  not equal to

≡  ≡  ≡  identical to

≤  ≤  ≤  lessthan or equal to

≥  ≥  ≥  greaterthan or equal to

⊂  ⊂  ⊂  subset of

⊃  ⊃  ⊃  superset of

⊆  ⊆  ⊆  subset of or equal to

⊇  ⊇  ⊇  superset of or equal to

⊕  ⊕  ⊕  circled plus = direct sum

⊥  ⊥  ⊥  up tack = orthogonal to = perpendicular
