\Sigma in my math equations however, they are not printed in italic like other text. I guess this is because they are symbols and not really text. Putting
\textit into the equation has no effect at all. Is there a way to italic these symbols?
If you always want the uppercase Greek letter in italics, the easiest method is to load
If instead you need both varieties, then input the italic ones with the
Note that some font packages, notably