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I'm sorry since I know this question has both been asked and answered before here, but I really am not good with computers and learning latex in itself has already been quite overwhelming. My question is: how do I write lowercase letters in \mathscr or \mathcal style?
I am using Overleaf and the packages used in other answers seem to not work there.
Please, if possible, use simple techniques, when I see a lot of code I simply don't understand what is going on :(
Thanks everyone!!
It is true that the (vast?) majority of math-script and math-calligraphic font shapes provide only uppercase letters. For some math font packages that provide these font shapes for lowercase letters as well, please see the pages 8 thru 10 in the user guide of the mathalpha package.
Do also note that the terminology of what's a "calligraphic" or a "script" font shape isn't fully standardized. One working definition is that "script" letters are more heavily sloped than "calligraphic" letters are; however, do be aware that this is just one, and certainly not universally accepted, possible definition.
After perusing the user guide of the mathalpha package in the manner suggested above, I came up with the following choice: esstix for \mathcal and \boondox for \mathscr. Again, let me emphasize that this is just one particular possible choice. Others may come up with other choices.
\documentclass{article}
\usepackage[scr=boondox, % heavily sloped
cal=esstix] % slightly sloped
{mathalpha}
\begin{document}
$\mathscr{abcABC} \quad \mathcal{abcABC}$
\end{document}