I know what my symbol or character looks like, but I don't know what the command is or which math alphabet it came from. How do I go about finding this out?

# Symbols – How to Look Up a Symbol or Identify a Letter from a Math Alphabet

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# Symbols – How to Look Up a Symbol or Identify a Letter from a Math Alphabet

###### Related Question

symbols

I know what my symbol or character looks like, but I don't know what the command is or which math alphabet it came from. How do I go about finding this out?

## Best Answer

You can look things up in the

Comprehensive LaTeX symbolslist. It can usually be easily accessed with`texdoc symbols`

or`texdoc symbols-a4`

(in MiKTeX the latter only).Another good option is to try the web-based software

Detexify, which allows you to draw the symbol and tries to recognize what you've drawn. Here is a screenshot:If you are using the package

`unicode-math`

, then besides using any Unicode character list, thelist of all supported symbols(`texdoc unimath-symbols`

) is very useful as it also lists which symbols are available in the various fonts.Using

`unicode-math`

, you can also search for characters by drawing (just like with detexify) usingShapeCatcher._{The above techniques provide an adequate way of finding symbols but are not necessarily foolproof since you sometimes need to know what you're looking for in order to find it. For example, in Typing Following notation in Latex it may not be apparent that "vector fields in differential geometry" are somehow related to "bowties". To that end, searching for a symbol rotated 90 degrees or flipped horizontally, say, might lead you in the right direction.}