# How to type math symbols in vim: ∀, ∃...

Yesterday I discovered that a lot of math symbols are in unicode and are available in regular text without LateX.
This is great news, but I also need a good way to type them in vim.
Vim is full of surprises and as it turns out, this is already built in via a feature called **digraph**.
Not sure how that exactly works yet, but I figured out key combos for some useful symbols.
In insert mode, you can access these symbols through `^K`

.
This will enter a `?`

which is just a placeholder.
Now type one of the combinations below and get beautiful math symbols!

Symbol | Keys |
---|---|

∑ | +Z |

∏ | *P |

→ | -> |

← | <- |

⇒ | => |

⇐ | <= |

± | +- |

∃ | TE |

∀ | FA |

∧ | AN |

∨ | OR |

≤ | =< |

≥ | >= |

These are the ones I found most useful, because they allow me to add small formulas to text notes without LateX.
From within vim you can access the full list by typing `:h digraphs-default`

.
Have fun!