symbol description | symbol | unicode (decimal) | vim digraph (first type <ctrl>k) |

plus minus | ± | 177 | +- |

squared (superscript 2) | ² | 178 | 2S |

coproduct (big, tall Pi) | ∏ | 8719 | *P |

summation (big, tall Sigma) | ∑ | 8721 | +Z |

bullet operator (dot product) | ∙ | 8729 | Sb |

(square) root | √ | 8730 | RT |

infinity | ∞ | 8734 | 00 |

Greek Letters |

Gamma | Γ | 915 | G* |

Delta | Δ | 916 | D* |

Theta | Θ | 920 | H* |

Pi | Π | 928 | P* |

Sigma | Σ | 931 | S* |

Phi | Φ | 934 | F* |

Psi | Ψ | 936 | Q* |

Omega | Ω | 937 | W* |

alpha | α | 945 | a* |

beta | β | 946 | b* |

gamma | γ | 947 | g* |

delta | δ | 948 | d* |

epsilon | ε | 949 | e* |

eta | η | 951 | y* |

theta | θ | 952 | h* |

kappa | κ | 954 | k* |

lambda | λ | 955 | l* |

mu | μ | 956 | m* |

pi | π | 960 | p* |

rho | ρ | 961 | r* |

sigma | σ | 963 | s* |

sigma (alternative) | ς | 962 | *s |

tau | τ | 964 | t* |

phi* | φ | 966 | f* |

psi* | ψ | 968 | q* |

omega* | ω | 969 | w* |

dagger (sword) | † | 8224 | /- |

double dagger (double sword) | ‡ | 8225 | /= |

left arrow* | ← | 8592 | <- |

up arrow | ↑ | 8593 | -! |

right arrow | → | 8594 | -> |

down arrow | ↓ | 8595 | -v |

Logic |

for all (for any) | ∀ | 8704 | FA |

partial differential (curled little d) | ∂ | 8706 | dP |

there exists (backwards capital E) | ∃ | 8707 | TE |

logical and | ∧ | 8743 | AN |

logical or | ∨ | 8744 | OR |

therefore (triangle of dots) | ∴ | 8756 | .: |

because (upside-down triangle of dots) | ∵ | 8757 | :. |

Sets |

Null set, empty set, var nothing, capital O slash | ∅ | 8709 | /0 |

Null set, empty set, var nothing, capital O slash | Ø | 216 | O/ |

element of | ∈ | 8712 | (- |

contains as member | ∋ | 8715 | -) |

set intersect | ∩ | 8745 | (U |

set union | ∪ | 8746 | U) |

subset of (contained in) | ⊂ | 8834 | (C |

superset of (contains) | ⊃ | 8835 | )C |

subset of or equal to | ⊆ | 8838 | (_ |

superset of or equal to | ⊇ | 8839 | )_ |

concatenation, centered dot | ∘ | 8728 | Ob |

Calculus |

integral S | ∫ | 8747 | In |

double integral S | ∬ | 8748 | DI |

line integral S with circle | ∮ | 8750 | Io |

Delta | ∆ | 8710 | DE |

Nabla | ∇ | 8711 | NB |

Equalities, inequalities, et al. |

tilde operator (centered tilde, proportional) | ∼ | 8764 | ?1 |

approximately equal to | ≅ | 8773 | ?= |

almost equal to | ≈ | 8776 | ?2 |

not equal to | ≠ | 8800 | != |

less than or equal to | ≤ | 8804 | =< |

greater than or equal to | ≥ | 8805 | >= |