Using Greek Letters

[disaa...@gmail.com]

I saw the oficial Racket list of all the LaTeX thing and made some research, but I don't get it. 

Can someone please explain me how to digite the greek letter Theta for example? And how to use it as the mathematical Theta function if that's possible?

Thank you a lot in advance!

[Philip McGrath]

(Forgot to reply all …)

Assuming what you are referring to is the "LaTeX and TeX inspired keybindings" for DrRacket (https://docs.racket-lang.org/drracket/Keyboard_Shortcuts.html#%28part._.La.Te.X_and_.Te.X_inspired_keybindings%29), you can insert the character "θ" by typing "\theta", then, with the insertion point positioned at the end of the "\theta", holding down the control key while pressing the \ key.

Note that this is not the only way to enter characters like "θ" into DrRacket: you can also copy and paste text containing theta, use a keyboard mapping at the operating-system level that supports Greek letters, or use the "Emoji & Symbols" viewer on Mac OS, among other methods.

Once you are able to enter θ, you can define it as the name for some value in the same way as any other identifier, e.g.:

#lang racket

(define θ
  "Hi")

(string-append θ ", world!")

-Philip

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[disaa...@gmail.com]

Hey Philip, thanks.

I don't get it yet, I type " \theta " and then when I type " Ctrl + \ " I get a Lamba symbol: " λ " ending with " \thetaλ " and nothing happens.

I really would like to be able to type it instead of copying pasting, cause you know.

-Philip

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[Robby Findler]

On a Mac, it is control-\. On other platforms it is something else. Check in edit|show active keybindings. Search for "Tex".

Robby

[Isaac Muniz]

Oh I got it, it should be " \theta " and then " Alt + \ ".

Thank you sirs. 

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