I have a set that contains vectors as its elements and would therefore like the vectors to be in bold font. Still, I am not sure if the set should also be bold. Which one is more accurate, 1 or 2?
$\textbf{S}$ and $\textbf{s}_i$ are both bold : $$ \textbf{S}=\{\textbf{s}_0, \textbf{s}_1, ...\} $$
$S$ is not bold, but $\textbf{s}_i$ is bold: $$ S=\{\textbf{s}_0, \textbf{s}_1, ...\} $$
Again, $\textbf{s}_i$ needs to be in bold because it is a vector.