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gives the greatest distance between any pair of vertices in the graph g.
Examplesopen allclose all Basic Examples (1)Give the graph diameter for a complete graph:
Scope (7)GraphDiameter works with undirected graphs:
Use rules to specify the graph:
GraphDiameter works with large graphs:
Applications (2)Illustrate the diameter in two Petersen graphs:
For a CompleteGraph, the diameter is 1:
For a PathGraph of size , the diameter is :
For a CycleGraph of size , the diameter is :
For a WheelGraph of size 5 or more, the diameter is 2:
A WheelGraph of size 4 is a complete graph, so the diameter is 1:
For a GridGraph of size {m,n}, the diameter is :
For a CompleteKaryTree tree of depth , the diameter is :
Find the largest number of steps separating two people at a family gathering network:
Properties & Relations (3)For a connected graph, the diameter can be computed by VertexEccentricity:
If a simple graph has diameter greater than 3, then its complement has diameter less than 3:
The graph diameter is unchanged when reversing every edge:
Wolfram Research (2010), GraphDiameter, Wolfram Language function, https://reference.wolfram.com/language/ref/GraphDiameter.html (updated 2015). TextWolfram Research (2010), GraphDiameter, Wolfram Language function, https://reference.wolfram.com/language/ref/GraphDiameter.html (updated 2015).
CMSWolfram Language. 2010. "GraphDiameter." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2015. https://reference.wolfram.com/language/ref/GraphDiameter.html.
APAWolfram Language. (2010). GraphDiameter. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/GraphDiameter.html
BibTeX@misc{reference.wolfram_2025_graphdiameter, author="Wolfram Research", title="{GraphDiameter}", year="2015", howpublished="\url{https://reference.wolfram.com/language/ref/GraphDiameter.html}", note=[Accessed: 11-July-2025 ]}
BibLaTeX@online{reference.wolfram_2025_graphdiameter, organization={Wolfram Research}, title={GraphDiameter}, year={2015}, url={https://reference.wolfram.com/language/ref/GraphDiameter.html}, note=[Accessed: 11-July-2025 ]}
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