Greek Characters

symbol | name | keyboard |
---|---|---|

Α, α | Alpha | |

B, β | Beta | |

Γ, γ | Gamma | |

Δ, δ | Delta | ⌥ j |

Ε, ε | Epilson | |

Θ, θ | Theta | |

Λ, λ | Lambda | ALT-995 |

Μ, μ | Mu | ALT-230, ⌥ m |

Π, π | Pi | ALT-227, ⌥ p |

Σ, σ, ς | Sigma | ALT-228,229, ⌥ w |

Φ, φ | Phi | |

Χ, χ | Chi | |

Ω, ω ς | Omega | ALT-234, ⌥ z |

Numbers Sets

symbol | name | keyboard |
---|---|---|

∈, ∊, ∉ | Element belongs to, doesn't belong to | |

ℕ | Natural Numbers | |

𝕀 | Pure Imaginary | |

ℤ | Integers, from German, "Zahlen" | |

ℚ | Rationals. from Italian "Quoziente" | |

ℙ | Irrational numbers (also ℝ∖ℚ is used) | |

ℝ | Reals | |

ℂ | Complex numbers |

Subscript & Superscript

symbol | name | keyboard |
---|---|---|

⁰ ₀ | super, subscript 0 | |

¹ ₁ | Super, subscript 2 | |

² ₂ | Super, subscript 2 | |

³ ₃ | Super, subscript 2 | |

₄ ⁴ | Super, subscript 4 | |

₅ ⁵ | Super, subscript 5 | |

₆ ⁶ | Super, subscript 6 | |

₇ ⁷ | Super, subscript 7 | |

₈ ⁸ | Super, subscript 8 | |

₉ ⁹ | Super, subscript 9 | |

ⁱ ₑ ⁿ | i, e, n |

Operators & Relations

symbol | name | keyboard |
---|---|---|

√ | square root | ALT-251, ⌥ v |

∛ ∜ | cube root & quad root | |

÷ | obelus (ah-bel-us), 6÷2=3 |
ALT-246, ⌥ / |

× | product, multiplication, times, 5×4=20 | |

𝑥 | italics x | |

∘ | function composition, as in f∘g | |

∫ | Integral for calculus | ⌥ b |

≈ | approximate, as in π ≈ 3.14 | ⌥ x |

≠ | not equal to, as in 1+1≠3 | ⌥ = |

≡ | modular arithmetic congruence | |

≅ | geometry congruence | |

± | plus or minus | ⌥ + |

∙ | multiplication dot or bullet | ALT-0149, ⌥ 8 |

⟌ | long division operator | |

≥ | greater than or equal to | ALT-242, ⌥ > |

≤ | less than or equal to | ALT-243, ⌥ < |

Fractions

symbol | name | keyboard |
---|---|---|

½ | one half | ALT-0189 |

⅓ | one third | |

¼ | one fourth | |

¾ | three fourths | ALT-0188 |

Statistics Symbols

symbol | name | keyboard |
---|---|---|

x̄ | x-bar average | ALT-0189 |

p̂ | p-hat proportion of a sample | |

ŷ | y-hat predicted outcome | |

μ | Mu, mean of a population | ALT-230, ⌥ m |

σ | Sigma, standard deviation | ALT-229, ⌥ w |

Miscellaneous Symbols

symbol | name | keyboard |
---|---|---|

¢ | American money unit cent | ALT-0189 |

→ | right pointing arrow | |

✓ | basic check mark ✓good job! | |

∞ | Infinity symbol, Lemniscate, pronounced ( lem-nis-kit) |
ALT-236, ⌥ 5 |

ƒ | italics f for functions | ⌥ f |

| Apple Computer Logo | ⌥ K |

Trigonometry & Angles

symbol | name | keyboard |
---|---|---|

sin⁻¹ | Inverse Sine | |

cos⁻¹ | Inverse Cosine | |

tan⁻¹ | Inverse Tangent | |

° | degree | ALT-248, ⌥⇧8 |

∠, ⦜ | angle & right angle | |

△, ⊿ | triangle, right-triangle | ⌥ j |