Here you can find a nice table of mathematical symbols.

**Basic Operations**

Symbol | Name | Description |
---|---|---|

+ | Plus | Addition |

- | Minus | Subtraction |

* | Multiplication | Multiplication |

/ | Division | Division |

= | Equals | Equal to |

≠ | Not equals | Not equal to |

< | Less than | Less than |

> | Greater than | Greater than |

≤ | Less than or equal | Less than or equal to |

≥ | Greater or equal | Greater than or equal to |

√ | Square root | Square root of a number |

^ | Exponent | Indicates exponentiation (e.g., 2^3 means 2 cubed) |

**Greek Alphabet**

Greek Letter | Uppercase | Lowercase | Meaning/Usage |
---|---|---|---|

Alpha | Α | α | Often used to represent the first or initial value in a sequence or set. It is also used in various contexts, such as angles and constants. |

Beta | Β | β | Often used to represent the second value or coefficient in a sequence, set, or equation. It is commonly used in statistics and regression analysis. |

Gamma | Γ | γ | Frequently used in mathematics and physics. It has various applications, such as representing a parameter, a constant, or a gamma function. |

Delta | Δ | δ | Often used to denote a change or difference. It is also used to represent a small increment in a variable or a variation in a quantity. |

Epsilon | Ε | ε | Commonly used to represent a small positive number, typically associated with limits and convergence in calculus. |

Zeta | Ζ | ζ | Primarily used to represent a variable in equations or to denote a complex number. |

Eta | Η | η | Frequently used to represent the efficiency or an unknown variable in equations and mathematical models. |

Theta | Θ | θ | Often used to represent angles in geometry and trigonometry. It is also used to represent unknown variables or parameters in equations and models. |

Iota | Ι | ι | Primarily used as a variable or an index in mathematics, especially in sequences, series, and summations. |

Kappa | Κ | κ | Commonly used as a variable in mathematics, physics, and engineering. It has various applications, such as representing a constant or a wave number. |

Lambda | Λ | λ | Frequently used in mathematics and physics. It represents eigenvalues, wavelengths, decay constants, and parameters in various contexts. |

Mu | Μ | μ | Often used to represent the mean or average in statistics. It is also used as a variable or coefficient in various mathematical equations. |

Nu | Ν | ν | Primarily used as a variable or a parameter in mathematics, physics, and engineering. |

Xi | Ξ | ξ | Commonly used in mathematics and statistics. It represents a variable, a set, or a distribution in various contexts. |

Omicron | Ο | ο | Occasionally used as a variable, but it does not have specific mathematical meaning or usage in most cases. |

Pi | Π | π | Frequently used to represent the mathematical constant pi, which is the ratio of a circle’s circumference to its diameter (approximately 3.14159). |

Rho | Ρ | ρ | Primarily used to represent a density, a correlation coefficient, or a resistivity in physics and engineering. |

Sigma | Σ | σ | Uppercase sigma (Σ) is used to denote summation, while lowercase sigma (σ) is used to represent the standard deviation in statistics. |

Tau | Τ | τ | Often used to represent time constants, torque, or a parameter in physics and engineering. |

Upsilon | Υ | υ | Frequently used to represent a variable or a parameter in mathematics, physics, and engineering. |

Phi | Φ | φ | Often used to represent the golden ratio or a variable in equations and models. It is also used in trigonometry and complex numbers. |

Chi | Χ | χ | Commonly used as a variable or a parameter in mathematics, physics, and engineering. |

Psi | Ψ | ψ | Frequently used in mathematics, physics, and engineering. It represents wave functions, angles, or a variable in various contexts. |

Omega | Ω | ω | Often used to represent the last or final value in a sequence or set. It is also used to denote angular velocity or a limit in calculus. |

**Set Theory**

Symbol | Name | Description |
---|---|---|

∈ | Element of | Used to specify that an element is in a set |

∉ | Not an element of | Used to specify that an element is not in a set |

⊆ | Subset of | A set whose elements are all members of another set |

⊂ | Proper subset of | A subset that is not equal to the original set |

⊇ | Superset of | A set containing all elements of another set |

⊃ | Proper superset of | A superset that is not equal to the original set |

∅ | Empty set | A set with no elements |

{ } | Set brackets | Used to denote a set |

∩ | Intersection | Common elements between two sets |

∪ | Union | All elements that are in either of two sets |

∖ | Set difference | Elements that are in one set but not another |

P(A) | Power set | The set of all subsets of a set |

**Calculus**

Symbol | Name | Description |
---|---|---|

∫ | Integral | Represents the integral of a function over an interval |

∂ | Partial derivative | Represents the partial derivative of a function |

∇ | Del or Nabla | A vector operator used in vector calculus |

∞ | Infinity | A number greater than any assignable quantity or count |

dx | Differential | Represents a small change in the variable x |

d/dx | Derivative | The derivative of a function with respect to x |

∑ | Summation | The sum of a series of terms |

∆x | Delta x | Represents a small change or difference in the variable x |

lim | Limit | The value a function approaches as the input approaches a value |

**Geometry**

Symbol | Name | Description |
---|---|---|

∠ | Angle | Used to represent an angle |

≅ | Congruent | Identical in form |

∥ | Parallel | Two lines in a plane that do not meet |

⊥ | Perpendicular | Intersection at a right angle |

π | Pi | The ratio of the circumference of a circle to its diameter |

° | Degree | A unit of measurement of angles |

’ | Minute | 1/60 of a degree |

’’ | Second | 1/60 of a minute |

r | Radius | The distance from the center to the edge of a circle |

d | Diameter | The distance across a circle through its center |

a,b,c | Sides of a triangle | Often used to represent the sides of a triangle |

h | Height | The “height” of a figure |

**Algebra**

Symbol | Name | Description |
---|---|---|

x, y, z | Variables | Often used to represent unknown quantities |

a, b, c | Constants | Often used to represent known quantities |

f(x) | Function of x | A function in terms of x |

≡ | Equivalent to | Identical or equal to |

≈ | Approximately equal | Roughly equal to |

∝ | Proportional to | Changes with the change of another quantity |

x² | Square | A number multiplied by itself |

x³ | Cube | A number multiplied by itself twice |

√x | Square root | A number which when squared gives x |

x! | Factorial | The product of an integer and all the integers below it |

x^n | Power | X raised to the power of n |

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