What Springer-Verlag Graduate Text in Mathematics am I?
My Erdős number is 4:
There are at least 3 other paths (and probably many more), but I like this one because I already knew (or knew of) everyone in the path.
At this point the lineage diverges from computer science into math: to Oswald Veblen, then E. H. Moore, then H. A. Newton, then Michel Chasles, then Siméon Poisson, who had two advisors, Joseph-Louis Lagrange and Pierre-Simon Laplace.
The full genealogy can be explored here.