gives an undirected graph from the directed graph g.
UndirectedGraph[{vw,…}]
uses rules vw to specify the graph g.


UndirectedGraph
gives an undirected graph from the directed graph g.
UndirectedGraph[{vw,…}]
uses rules vw to specify the graph g.
Details and Options

- The undirected edge uv is an edge in the resulting undirected graph if either of the directed edges uv or vu is an edge of g.
- UndirectedGraph works with directed graphs, multigraphs, and mixed graphs.

Examples
open all close allScope (7)
The input is unchanged for undirected graphs:
UndirectedGraph works with directed graphs:
Use rules to specify the graph:
Directed edges with different directions convert to one undirected edge:
UndirectedGraph works with large graphs:
Properties & Relations (4)
An undirected graph can be constructed by a list of UndirectedEdge objects:
A graph is either undirected or directed:
A symmetric adjacency matrix is interpreted to be an undirected graph:
Use DirectedEdges->True to interpret it as a directed graph:
The incidence matrix of an undirected graph has no negative entries:
Related Guides
Text
Wolfram Research (2010), UndirectedGraph, Wolfram Language function, https://reference.wolfram.com/language/ref/UndirectedGraph.html (updated 2015).
CMS
Wolfram Language. 2010. "UndirectedGraph." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2015. https://reference.wolfram.com/language/ref/UndirectedGraph.html.
APA
Wolfram Language. (2010). UndirectedGraph. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/UndirectedGraph.html
BibTeX
@misc{reference.wolfram_2025_undirectedgraph, author="Wolfram Research", title="{UndirectedGraph}", year="2015", howpublished="\url{https://reference.wolfram.com/language/ref/UndirectedGraph.html}", note=[Accessed: 13-August-2025]}
BibLaTeX
@online{reference.wolfram_2025_undirectedgraph, organization={Wolfram Research}, title={UndirectedGraph}, year={2015}, url={https://reference.wolfram.com/language/ref/UndirectedGraph.html}, note=[Accessed: 13-August-2025]}