Useful Symbols
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Various Symbols that may not be easy to type using a keyboard, and/or symbols that are otherwise easy to forget but used commonly.
Basic Mathematical Symbols
| Symbol | Name | Link to Additional Info |
|---|---|---|
| ≤ | Less than or Equal | |
| ≥ | Greater than or Equal | |
| ≪ | Significantly Less than | |
| ≫ | Significantly Greater than | |
| ≠ | Not Equal | |
| ≈ | Approximately Equal | |
| ≡ | Equivalent | |
| ± | Plus/Minus | |
| √ | Square Root | |
| ∑ | Summation | |
| ⌈ ⌉ | Ceiling | |
| ⌊ ⌋ | Floor | |
| ⌊ ⌉ | Nearest Integer |
Advanced Mathematical Symbols
See also: Greek Letter table (below).
| Symbol | Name | Link to Additional Info |
|---|---|---|
| ∞ | Infinity | |
| ∘ | Function Composition | |
| ∫ | Integral | |
| ∮ | Closed Integral | |
| ∂ | Partial Derivative | |
| ∇ | Gradient | |
| := | Mathematical Assignment |
Greek Letters
Greek letters which are commonly used in various forms of Mathematics.
| Symbol | Alt Symbol | Name | Link to Additional Info |
|---|---|---|---|
| Α | α | Alpha | |
| Β | β | Beta | |
| Γ | γ | Gamma | |
| Δ | δ | Delta | |
| Ε | ε | Epsilon | |
| Ζ | ζ | Zeta | |
| Θ | θ | Theta | |
| Ι | ι | Iota | |
| Κ | κ | Kappa | |
| Λ | λ | Lambda | |
| Μ | μ | Mu | |
| Ν | ν | Nu | |
| Ξ | ξ | Xi | |
| Ο | ο | Omicron | |
| Π | π | Pi | |
| Ρ | ρ | Rho | |
| Σ | σ | Sigma | |
| Τ | τ | Tau | |
| Υ | υ | Upsilon | |
| Φ | φ | Phi | |
| Χ | χ | Chi | |
| Ψ | ψ | Psi | |
| Ω | ω | Omega |