When writing a research paper, what is the best way to denote a tuple and a set? The problem is the following: I have a set of geometric intersections $\{s_1,s_2,s_3,...\}$ and then I order them. So I can say that I have a tuple of intersections $(s_1,s_2,s_3,...)$.
First I though it might be good to denote the set by $\mathbf{s}$ (bolded math s) and the tuple by $\vec s$, but then I though it might be strange to use vectors since I'm not dealing with vector spaces. Any thoughts what might be a natural (or most often used) choice or letters? I need a single letter, since I'm using the sequences as indices later.