Can anyone tell me how can I use this code \mathscr{A} in LyX plz?

Thank u
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Code: Select all
\usepackage{mathrsfs}
Code: Select all
\mathscr{A}
NEW: TikZ book now 40% off at Amazon.com for a short time.
And: Currently, Packt sells ebooks for $4.99 each if you buy 5 of their over 1000 ebooks. If you choose only a single one, $9.99. How about combining 3 LaTeX books with Python, gnuplot, mathplotlib, Matlab, ChatGPT or other AI books? Epub and PDF. Bundle (3 books, add more for higher discount): https://packt.link/MDH5p