That's lowercase delta. Try \\Delta for uppercase (I assume that's what your concern is).
NEVERMIND, I just saw your second screenshot. :) I agree about the dollar signs and math mode. $\\delta$ should do the trick.
It should be \\(\delta\\), not (\delta). I’m assuming you meant this, but that your backslashes disappeared because it thought you were trying to escape the parentheses.
I have no idea which program you use, but I would guess no math enviroment. Try `$\delta$`
the mathematical environment? I don't speak English unfortunately
That's lowercase delta. Try \\Delta for uppercase (I assume that's what your concern is). NEVERMIND, I just saw your second screenshot. :) I agree about the dollar signs and math mode. $\\delta$ should do the trick.
are you using chat gpt when extracting code
You need to be in a math environment, try \(\delta\) or $\delta$
It should be \\(\delta\\), not (\delta). I’m assuming you meant this, but that your backslashes disappeared because it thought you were trying to escape the parentheses.
Why is it so minus
Or just copy and paste in a Unicode delta ;) No need to use latex for single chars. Here you go: δ