Is there a standard notation for a graph (on a given set of vertices) without any edges?



Notation for a graph without any edges?
There are many ways to define a *graph*, but a pretty standard one is a pair $(V,E)$ where $V$ is a finite set of points and $E \subset \binom{V}{2}$. So, what you are looking for is $(V, \emptyset)$; which would be pretty widely understood.


