| Notation | Originator | Earliest known usage |
| Infinity symbol (∞) | |
| Vertical bars for the absolute value of x (|x|) | |
| Exclamation mark (!) for factorial | |
| Prime (') notation for total derivatives | |
| Elongated 'S' (∫) for integrals | |
| Perpendicularity sign (⊥) | |
| Big-O notation for asymptotic bounds | |
| Curly braces ({, }) for enclosing elements of sets | |
| Stylized Greek letter epsilon (∈) for 'is an element of' | |
| Nabla symbol (∇) for vectorial derivatives, etc. | |
| Obelus (÷) for division, therefore symbol (∴) | |
| Bra-ket notation (⟨| , |⟩) in physics | |