OFFSET
1,4
COMMENTS
When the graph diameter is equal to the radius, every node has the same eccentricity and is in both the graph center and the graph periphery.
LINKS
Eric Weisstein's World of Mathematics, Graph Center
Eric Weisstein's World of Mathematics, Graph Periphery
Wikipedia, Distance (graph theory)
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Andrew Howroyd, Sep 02 2019
STATUS
approved