I am in a need of symbol(s) which would denote the set of self-loops in a graph, usable in a mathematical context. As of now, I'm choosing between
- overlapping the letters
- a circle with an arrow tip
The symbol has to maintain its form when switching to a different font or font size. As of now, I don't know whether any of them is already available in some package. Do you know more?
(Note: Unicode is unfortunately out of question.)