The central point in a wheel graph . The hub has degree
.
Hub
See also
Wheel GraphExplore with Wolfram|Alpha
References
Saaty, T. L. and Kainen, P. C. The Four-Color Problem: Assaults and Conquest. New York: Dover, p. 148, 1986.Referenced on Wolfram|Alpha
HubCite this as:
Weisstein, Eric W. "Hub." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/Hub.html