# In graph theory, is there a term for the value of the difference between indegree and outdegree?

I'm working on a Graph Theory research project, and one of the key components is talking about the indegrees and the outdegrees of a few particular vertices. I need to define a term for the value of indegree-outdegree for a particular vertex. Or for vertex $$v$$ does the value $$\deg^{-}(v) - \deg^{+}(v)$$ have a name?

Some possible terms have been "netdegree" or "flow value," which would suffice for my needs, but I would like to make sure I use the existing terminology if possible.

• I don't know of any standard terminology. I like "net income." Nov 13 '20 at 0:29
• I believe the word "excess" can also be used (especially if your graph relates to flow networks). Nov 13 '20 at 0:30