This math symbols reference lists common mathematical symbols with their names and meanings — from basic operators to set theory, calculus and logic.
| Symbol | Meaning |
|---|---|
| + | Plus / addition |
| − | Minus / subtraction |
| × | Multiplication |
| ÷ | Division |
| = | Equals |
| ≠ | Not equal |
| < | Less than |
| > | Greater than |
| ≤ | Less than or equal |
| ≥ | Greater than or equal |
| ± | Plus-minus |
| √ | Square root |
| ∑ | Summation |
| ∏ | Product |
| ∫ | Integral |
| ∞ | Infinity |
| π | Pi (3.14159…) |
| Symbol | Meaning |
|---|---|
| ° | Degree |
| ∠ | Angle |
| ≈ | Approximately equal |
| ∝ | Proportional to |
| ∈ | Element of |
| ∉ | Not an element of |
| ⊂ | Subset of |
| ∪ | Union |
| ∩ | Intersection |
| ∀ | For all |
| ∃ | There exists |
| ∂ | Partial derivative |
| ∇ | Nabla / del |
| ∴ | Therefore |
| ∵ | Because |
| ≡ | Identical to |
| ∅ | Empty set |