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


Discrete Math Logical Symbols

Symbol Name Link to Additional Info
Material Implication Discrete Math - Propositional Logic
Converse Implication
Material Equivalence Discrete Math - Propositional Logic
¬ Negation Discrete Math - Propositional Logic
Logical Conjunction Discrete Math - Propositional Logic
Logical (Inclusive) Disjunction Discrete Math - Propositional Logic
Logical (Exclusive) Disjunction Discrete Math - Propositional Logic
Tautology Discrete Math - Propositional Logic
Contradiction Discrete Math - Propositional Logic
Empty Set Discrete Math - Sets
Set Membership Discrete Math - Sets
Set Membership Negation Discrete Math - Sets
Subset Discrete Math - Sets
Proper Subset Discrete Math - Sets
Superset
Proper Superset
Universal Quantification Discrete Math - Sets
Existential Quantification Discrete Math - Sets
∃! Uniqueness Quantification Discrete Math - Sets
Therefore Discrete Math - Sets
Because
Union Discrete Math - Sets
Intersection Discrete Math - Sets
Symmetric Difference Discrete Math - Sets